Common wisdom about conventional antiferromagnets is that their low-energy physics is governed by spin–wave excitations. However, new experiments on several cuprate compounds have challenged this concept. An enhanced thermal Hall response in the pseudogap phase was identified, which, remarkably, persists...
Recent News and Events
For the first time, researchers have captured images of the formation of individual viruses, offering a real-time view into the kinetics of viral assembly. The research provides new insights into how to fight viruses and engineer self-assembling particles...
Complex lattices that change in response to stimuli open a range of applications in electronics, robotics, medicine...
Ultracold molecules have important applications that range from quantum simulation and computation to precision measurements probing physics beyond the Standard Model. Optical tweezer arrays of laser-cooled molecules, which allow control of individual particles...
Machine learning techniques have so far proved to be very promising for the analysis of data in several fields, with many potential applications. However, researchers have found that applying these methods to quantum physics problems is far more challenging...
Three lectures by Yann LeCun (September 16-18, 2019): "The unreasonable effectiveness of deep learning, " "The energy-based formulation of learning, " and "Intriguing connections between deep learning and physics."
For decades, there has been evidence that classroom techniques designed to get students to participate in the learning process produces better educational outcomes at virtually all levels. And a new Harvard study suggests it may be important to let students know it.
What controls the size of an embryo and, by extension, the size of tissue, organs and the whole organism? For as much as we know about embryogenesis, questions about how an embryo maintains its size early in development are still unanswered...
Graduate student Aavishkar Patel and Professor Subir Sachdev have recently presented a new theory of a Planckian metal that could shed light on previously unknown aspects of quantum physics. Their paper, published in Physical Review Letters, introduces a lattice model...
Experimental music from experimental physics, ColliderScope is a musical project of Lawrence Lee, a Postdoctoral Fellow working at the Large Hadron Collider at CERN. With a unique form of audio synthesis, waveforms are designed to show images from the world of experimental particle physics...
Researchers have developed a mathematical framework that can turn any sheet of material into any prescribed shape, inspired by the paper craft kirigami (from the Japanese, kiri, meaning to cut and kami, meaning paper). Unlike its better-known cousin origami, which uses folds to shape paper, kirigami relies on a pattern of cuts in a flat paper sheet to change its flexibility and allow it to morph into 3D shapes...
Protein aggregation — in which misfolded proteins clump together to form large fibrils — has been implicated in many diseases including Alzheimer’s, Parkinson’s, and type II diabetes. While the exact role these fibrils play in diseases isn’t fully understood, many of the current treatments for diseases like Alzheimer’s and Parkinson’s target the aggregation process...
Dead or alive, left-spinning or right-spinning—in the quantum world particles such as the famous analogy of Schrödinger's cat can be all these things at the same time. Postdoc Ahmed Omran and grad student Harry Levine, of Mikhail Lukin group...
The recent discovery of correlated insulating states and superconductivity in twisted bilayer graphene has opened the door to a new approach to designing correlated materials by controlling the twist angles. In a new study published in Physical Revew B, researchers in Prof. Vishwanath group...
Associate Professor of Physics Cora Dvorkin has been selected to receive funding for research projects through the Department of Energy Early Career Research Program.
For decades, researchers have chased ways to study how biological machines power living things. Every mechanical movement — from contracting a muscle to replicating DNA — relies on energy-fueled molecular motors that take tiny, near-undetectable steps. Trying to see these movements is like trying to watch a soccer game on the moon from Earth.
One of the simplest models of interacting fermions on a two-dimensional (2D) lattice—the Hubbard model—becomes too tricky to simulate on classical computers as the density of empty lattice sites (holes) increases. Harvard scientists, in partnership with Munich Center for Quantum Science and Technology, Munich, Germany, used a quantum microscope to take snapshots of...
Leaders in the field of ultracold molecule research from Columbia and Harvard universities are teaming up to propel understanding of the quantum mechanics of chemical reactions. The partnership will result in the development of new, more precise techniques that will expand the field of ultracold chemistry...
Since their 1986 discovery, cuprate superconductors have puzzled physicists. These copper-containing materials can conduct electricity with zero resistance at temperatures of up to 135 K, well above the maximum temperature of 30 to 40 K predicted by theory. For the last 33 years, researchers have sought to explain this enigmatic behavior but still lack a complete description...
Phase transitions occur when a substance changes from a solid, liquid or gaseous state to a different state—like ice melting or vapor condensing. During these phase transitions, there is a point at which the system can display properties of both states of matter simultaneously. A similar effect occurs when normal metals transition into superconductors...
Congratulations to Matthew Reece for his promotion to Professor of Physics with tenure! Reece received his PhD from Cornell in 2008, where his advisor was Csaba Csaki. He has been a professor at the Harvard Department of Physics since 2012...
Congratulations to Cora Dvorkin for her promotion to Associate Professor of Physics!
Fluid flows induced by nutrient gradients in the vicinity of microbial colonies help direct the expansion of those microbes into new territory.
Wednesday, June 5 @6:00PM, Science Center Hall D
In this talk, Dr. Farmelo, the award-winning author of The Strangest Man, will discuss his new book, The Universe Speaks in Numbers: How Modern Math Reveals Nature's Deepest Secrets, which takes his readers on a journey from the Scientific Revolution to string theory, highlighting the role of mathematics...
In this talk, Dr. Farmelo, the award-winning author of The Strangest Man, will discuss his new book, The Universe Speaks in Numbers: How Modern Math Reveals Nature's Deepest Secrets, which takes his readers on a journey from the Scientific Revolution to string theory, highlighting the role of mathematics...
November, 2018, PhDs: Jae Hyeon Lee, Alexander Lukin, Oleksandr Shtyk, and Alexa
Harvard University is part of a team of theoretical physicists from the United States and Austria investigating fundamentally new quantum mechanical behavior arising in systems of large numbers of electrons or atoms. This collaboration, entitled "Ultra-Quantum Matter"...
Watch the March 28, 2019, interview with Prof. Subir Sachdev, co-recipient of the 2018 International Center for Theoretical Physics Dirac Medal for cross-disciplinary approaches to many-body systems: https://www.youtube.com/embed/9EODiPsh0uU.
Physics Concentrators: Elba Alonso Monsalve, Jeffery Andrade, Peter Bermant, Ma
Thirty graduate students and postdocs from astronomy, physics, and applied physics spent three days together in Cape Cod, learning skills for daily writing, negotiation, and communication...
Majorana particles are very peculiar members of the family of elementary particles. First predicted in 1937 by the Italian physicist Ettore Majorana, these particles belong to the group of so-called fermions, a group that also includes electrons, neutrons and protons. Majorana fermions are electrically neutral and also their own anti-particles...
FAS Dean Claudine Gay has approved the promotion of David Morin to Senior Lecturer in Physics...
Motivated by the success in many different fields of science and engineering, such as image recognition and analysis of big data in biology, machine learning has recently come to prominence in condensed matter physics – in particular, for the purpose of classification and detection of phase transitions...
Scanning tunneling microscopy of cuprate crystals reveals a change between two distinct types of modulations in the electron density that could shed light on what controls exotic electronic behavior in these high-temperature superconductors...
Congratulations to physics concentrators Anna Biggs, Abijith Krishnan, Maya Miklos, Kai Trepka, and Dan Eniceicu...
A Skeptical History of Numbers
Wednesday,May 1, 2019 @6:00PM
Science Center Hall D
One Oxford Street, Cambridge, MA
Wednesday,May 1, 2019 @6:00PM
Science Center Hall D
One Oxford Street, Cambridge, MA
Imagine two people on opposite sides of a long line of people who want to pass a note to each other. In our classical world, the note has to be handed over from one person to the next until, eventually, it reaches the other end. However, in the quantum world, any object can be at multiple locations at the same time...
Artificial intelligence, a branch of computer science that is transforming scientific inquiry and industry, could now speed the development of safe, clean and virtually limitless fusion energy for generating electricity. A major step in this direction is under way at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) and Princeton University, where a team of scientists working with a Harvard graduate student...
Winners of the 2019 Maurice and Gertrude Goldhaber and Merit Prizes are Trond Andersen, Hofie Hannesdottir, Stephen Carr, Harry Levine, Georges Obied, and Ann Wang.
Congratulations to Alex Atanasov, winner of Hertz, NSF GRFP, and NDSEG fellowships!
Prof. Ashvin Vishwanath and colleagyes develop way to discover and predict topological materials...
Congratulations to Professor Subir Sachdev on his election to the American Academy of Arts and Sciences in Class I, Mathematical and Physical Sciences!
Congratulations to Michelle Chalupnik and Nathaniel Vilas on receiving 2019 National Defense Science and Engineering Graduate (NDSEG) Fellowships. The NDSEG Fellowships are awarded to individuals who have demonstrated the ability and special aptitude for advanced training in science and engineering...
Photographing A Supermassive Black Hole With The Event Horizon Telescope
Wednesday, April 17, 2019 @6:00PM
Science Center Hall C
One Oxford Street, Cambridge, MA
Wednesday, April 17, 2019 @6:00PM
Science Center Hall C
One Oxford Street, Cambridge, MA
In this talk, Dr. Ramakrishnan, co-recipient of the 2008 Nobel Prize in Chemistry for uncovering the structure of the ribosome, will discuss his new book, Gene Machine.
Lee Lecture by Anton Zeilinger (Vienna), "Quantum Information and Quantum Communication, Foundations and Prospects." April 24, 2019 @8:00PM...
The 2019 Class of Paul & Daisy Soros Fellows is made up of 30 outstanding immigrants and children of immigrants from all over the country and world who are pursuing graduate school here in the United States...
Congratulations to 2019 NSF Graduate Research Fellowship Winners: Bernstein, Cesarotti, Contreras, Krulewski, Lee, Putnam, and Wang!
An algorithm based on symmetry indicators is used to search a crystallographic database and finds thousands of candidate topological materials, which could be exploited in next-generation electronic devices...
The PhD Track in Engineering and Physical Biology (EPB) invites you to attend their annual Symposium, being held on Saturday April 6th from 9:30am to 1:00pm in the Northwest Building, 52 Oxford St, Room B101. The event is free and open to the public.
Exactly a year ago, researchers at MIT reported on observing superconductivity in twisted bilayer graphene – a new experimental platform engineered on two misaligned graphene layers – at “magic angles” near 1.1°
One of the first quantum simulators has produced a puzzling phenomenon: a row of atoms that repeatedly pops back into place. Physicists have been racing to explain what might be going on...
Two-dimensional magnetic insulators exhibit a plethora of competing ground states, such as ordered (anti)ferromagnets, exotic quantum spin liquid states, and random singlet phases. Spin liquids, in particular, are collective phases of matter which have eluded discovery for several decades...
In this talk about her book, Picturing Science and Engineering, Felice Frankel will show her own approaches to creating depictions of research and science phenomena—the successes and the failures.
Congratulations to Prof. Xiaowei Zhuang, the recipient of 2019 Award for Scientific Discovery of the National Academy of Sciences "for her pioneering contributions to super-resolution imaging and genomic-scale imaging methods!"
It was one of the great missed connections of physics. In 1965 a particle theorist derived a formula for the collision of elementary particles. Twenty years later two gravitation theorists, using completely different techniques, derived a formula for the collision...
Recent experiments have revealed remarkable new features of the optimal doping state of cuprate superconductors, namely, a peak in the specific heat for the hole-doped case and a state with Fermi pockets but only fluctuating antiferromagnetic order for the electron-doped case...
Researchers have now shown that the computation of symmetry indicators for any crystalline symmetry setting can readily be integrated into standard first-principle calculations...
Three lectures by Donna Strickland (March 4-6, 2019): "From Nonlinear Optics to High-Intensity Laser Physics, " "Investigation of Multi-frequency Raman Generated Spectra, " and "Two-Color CPA Laser Development for Nonlinear Optics."
New research is shedding light on the principles of termite mound size and shape with a model coupling insect behavior and environmental remodeling...
In this lecture, Prof. Reich will discuss his new book, Who We Are and How We Got Here: Ancient DNA and the New Science of the Human Past.
To determine how bees organize to cool their nests, researchers measured temperature, air flow into and out of the nest, and the position and density of bees fanning at the nest entrance...
The quantum Ising chain in a transverse magnetic field is the paradigm of a quantum phase transition, displaying universal quantum criticality at low temperatures. Insights from this model have informed studies of quantum criticality in numerous modern correlated-electron materials...
In this talk, Prof. Richard Wrangham will discuss his new book, The Goodness Paradox: The Strange Relationship Between Virtue and Violence in Human Evolution
David Morin and Jacob Barandes named Co-Directors of Undergraduate and Graduate Studies, respectively...
The Harvard University chapter of the Society of Physics Students (SPS) has won an Outstanding Chapter Award from the SPS National Office for the academic year 2017-2018. This is the highest level of distinction given to fewer than 10 percent...
Physics World is pleased to announce that Liujun Zou from Harvard University in the US has won the magazine’s inaugural science-communication award, which was set up "to celebrate the huge advances that China is making in science, engineering and medicine"...
Roy J. Glauber ’46, the pioneering theoretical physicist who received the Nobel Prize in 2005 and was one of the last living scientists to have been present for the dawn of the atomic age, died on Dec. 26, 2018. He was 93...
In the world of quantum computing, interaction is everything. For computers to work at all, bits — the ones and zeros that make up digital information — must be able to interact and hand off data for processing. The same goes for the quantum bits, or qubits...
Physicist shares vision for connecting with faculty, students...
Experiments suggest that exotic superconducting materials share a “strange metal” state characterized by a quantum speed limit that somehow acts as a fundamental organizing principle...
It is with great sadness that we announce that Jene Golovchenko passed away on November 13, 2018.
The study of exotic one-dimensional states, particularly those at the edges of topological materials, demand new experimental probes that can access the interplay between charge and spin degrees of freedom. One potential approach is to use a single spin probe...
Quantum science—the physics and engineering of the world at sub-microscopic scales—got a boost today as Harvard formally announced an initiative that will combine basic and applied research into the realm of the very small, as well as foster collaborations...
Quantum Hall ferromagnets are among the purest magnets in the world — and one of the most difficult to study. These 2D magnets can only be made in temperatures less than a degree above absolute zero...
Working in a basement lab at Harvard, a group of researchers led by John Doyle, the Henry B. Silsbee Professor of Physics, has been part of a team to make the most precise measurement ever of the shape of the field around an electron, and the results suggest that some theories for what lies beyond the standard model of physics need to return to the drawing board...
In this talk, based on his book What is Real? The Unfinished Quest for the Meaning of Quantum Physics, Dr. Becker will explain the puzzles at the heart of quantum physics, why they matter, and what really went down between Einstein and Bohr 90 years ago...
Congratulations to Prof. Julia Mundy for receiving the 2019 George E. Valley, Jr. Prize, Prof. Kang-Kuen Ni for the 2019 I.I. Rabi Prize in Atomic, Molecular, and Optical Physics, and Lisa Randall for the 2019 J. J. Sakurai Prize for Theoretical Particle Physics!
Three lectures by Jun Ye: "Quantum matter and atomic clocks (Oct. 22) "; "Frequency Comb Spectroscopy – from mid-IR to XUV" (Oct. 23); "Cold molecules – a new playground for quantum and chemical physics" (Oct. 24).
Congratulations to Xiaowei Zhuang for winning a 2019 Breakthrough Prize In Life Sciences and Daniel Jafferis for a 2019 New Horizons In Physics Prize!
In a new study, researchers at Northwestern, Harvard and Yale universities examined the shape of an electron's charge with unprecedented precision to confirm that it is perfectly spherical. A slightly squashed charge could have indicated unknown, hard-to-detect heavy particles in the electron's presence...
New tool developed in the Walsworth Lab uses NV centers to detect magnetic fields in various directions...
Multiple award‑winning science writer Marcia Bartusiak will talk about her new books, "Dispatches from Planet 3: Thirty-Two (Brief) Tales on the Solar System, the Milky Way, and Beyond"...
This book is a collection of 57 very challenging math problems with detailed solutions. It is written for anyone who enjoys pondering difficult problems for great lengths of time. The problems are mostly classics...
A new theory describes how both insulating and superconducting behavior arises from sheets of graphene stacked and twisted at a particular "magic" angle.
Colloidal clusters consist of small numbers of colloidal particles bound by weak short-range attractions. The equilibrium probability of observing a cluster in a particular geometry is well described by a statistical mechanical model originally developed for molecules...
Diamond-defect magnetometers can now simultaneously determine all spatial components of a magnetic field, leading to a factor of 4 decrease in measurement times.
Shaking the swarm: Researchers explore how bees collaborate to stabilize swarm clusters...
Photon-mediated interactions between quantum systems are essential for realizing quantum networks and scalable quantum information processing. Prof. Mikhail Lukin and colleagues report on such interactions between pairs of silicon-vacancy (SiV) color centers...
Distinguishing between fragile and stable scenarios is central to a proper diagnosis of topological band insulators...
An optical design called Maxwell’s fish eye lens could produce quantum entanglement between atoms separated by an arbitrary distance, new calculations show.
The already buzzing field of topological physics could be about to explode. For the first time, researchers have systematically scoured through entire databases of materials in search of ones that harbour topological states...
Congratulations to Prof. Philip Kim for winning the 2018 Caterina Tomassoni and Felice Pietro Chisesi Prize...
Breaking down band structures — system could help researchers design new materials with specific properties...
Metallizaton of hydrogen and its isotopes has been one of the great challenging problems in condensed matter physics. There are two pathways to metallic hydrogen: very high pressure and low temperatures to make solid metallic hydrogen, or intermediate pressures...
The problem with string theory, according to some physicists, is that it makes too many universes. It predicts not one but some 10500 versions of spacetime, each with their own laws of physics. But with so many universes on the table, how can the theory explain why ours has the features it does?..
Subir Sachdev is a co-recepient of the 2018 Dirac Medal by the Abdus Salam International Centre for Theoretical Physics for "contributions toward understanding novel phases in strongly interacting many-body systems, introducing original cross-disciplinary techniques."
Prof. Bertrand Halperin has been awarded the 2019 Medal for Exceptional Achievement in Research by the American Physical Society...
When Harry Potter and the Order of the Phoenix was translated into Braille, it spanned 1,000 pages over 14 volumes of thick Braille paper...
Magnetic skyrmions are two-dimensional non-collinear spin textures characterized by an integer topological number. Room-temperature skyrmions...
Around 40 years ago, physicists stumbled on an elegant recipe for creating exotic phases of matter: Pour electrons into a clean two-dimensional environment, add a magnetic field, and allow to cool...
Sabiha Saklayen, Harvard Physics PhD 2017, was named one of "35 Innovators Under 35" by MIT Technology Review for developing a way to edit genes with cheap lasers...
Stubbs will be the second ever administrator in the role. His predecessor, Geophysics professor Jeremy Bloxham, became the inaugural holder of the position in 2007.
Ultracold molecules are ideal platforms for many important applications, ranging from quantum simulation and quantum information processing to precision tests of fundamental physics. Producing trapped, dense samples of ultracold molecules is a challenging task...
Harvard University researchers are using physics to solve one of the biggest challenges in designing light-weight, long-lasting batteries: how to squeeze more energy into less space...
Experiments show that the friction between two surfaces depends on their history of contact and that this "memory" is reminiscent of the behavior of glasses...
Scientists have developed a new technique to squeeze infrared light into ultra-confined spaces, generating an intense, nanoscale antenna...
Physicists from Harvard University explore the possibility that dark matter, or a small amount of it, may have an electric charge...
PhDs: Anders Andreassen, Erik Bauch, David Bracher, Stephen Kam Wah Chan, Shubhayu Chatterjee, Soonwon Choi...
With deep sadness we announce the passing of Richard Wilson, Mallinckrodt Professor of Physics, Emeritus.
Cora Dvorkin, Shutzer Assistant Professor of Physics, has been elected as 2018-2019 Fellow at the Radcliffe Institue of Advanced Study...
Prof. Mikhail Lukin has been inducted into the National Academy of Sciences "in recognition of their distinguished and continuing achievements in original research.
Congratulations to Jennifer Roloff, Sean Burchesky, Will Conway, and Nicholas Deporzio!
It’s not often that you see 50-year-old equipment in a modern physics laboratory, let alone find it at the center...
For centuries, people have looked at living things and wondered how they work, why they look the way they do, and how they adapt to changing environments. Yet despite the enormous strides made in understanding such developments with the advent of such aids as single-cell sequencing...
Winners of the 2018 Maurice and Gertrude Goldhaber and Merit Prizes are Ana-Maria Raclariu, Victor Buza, Alexandra Thomson, and Alexander Keesling...
Congratulations to G1 Iris Cong for winning two major fellowships: The Fannie and John Hertz Foundation's Graduate Fellowship Award and The
Paul & Daisy Soros Fellowship for New Americans!
Graduate student Lee Liu and members of Prof. Kang-Kuen Ni's group have combined two atoms for the first time into what researchers call a dipolar molecule...
On Monday, April 23, @8:00pm, Prof. Rainer Weiss will give a talk on the history of LIGO and the man who organized and guided the process to make LIGO a reality...
The copper oxide-based high-temperature superconductors display a mysterious "pseudogap" metal phase at temperatures just above...
Three lectures by Margaret Murnane (JILA ): April 10, 11, and 12, 2018. (Note unusual start day and time.)
Physicists have shown that when two sheets of graphene are misaligned at a so-called magic angle of approximately 1.1°, the two-layer stack becomes a...
In a classically scale-invariant quantum field theory, tunneling rates are infrared divergent due to the existence of instantons of any size. While one expects...
Holographic Quantum Matter by Sean A. Hartnoll, Andrew Lucas and Subir Sachdev (MIT, 2018), and Lectures on the Infrared Structure of Gravity and Gauge Theory by Andrew Strominger (Princeton, 2018)
I had the good fortune to meet Stephen Hawking in 1982. This was to be the beginning of a long and vibrant scientific interaction and friendship. I was fresh out of graduate school and Stephen could still speak in a growly voice. It took me a few days to understand what he was saying but I managed to do it. And there was a lot to say!...
The fruit fly Drosophila melanogaster has been used in biological research studies for more than 100 years. We have a deep understanding of how fruit fly genes function to control growth, behavior, and many other processes...
The Harvard Foundation for Intercultural and Race Relations has named Prof. Cora Dvorkin the 2018 Harvard Scientist of the Year. The students of the Harvard Foundation nominate a scientist to recognize that individual’s outstanding work in science, engineering, and mathematics yearly...
Michael Berry, Melville Wills Professor of Physics (Emeritus) at the University of Bristol, UK, will talk about the Aharonov-Bohm effect which concerns the role in quantum physics of the vector potential of an impenetrable line of magnetic flux...
What is inside an atom between the nucleus and the electron? Usually there is nothing, but why could there not be other particles too? If the electron orbits the nucleus at a great distance, there is plenty of space in between for other atoms. A "giant atom" could be created, filled with ordinary atoms...
Try a quick experiment: Take two flashlights into a dark room and shine them so that their light beams cross. Notice anything peculiar? The rather anticlimactic answer is, probably not. That's because the individual photons that make up light do not interact...
Optical pulses from bichromatic lasers are used to control the temperature and motion of strontium monohydroxide molecules, a step towards trapping molecules...
Ever since the dawn of civilization we have been driven by a desire to know - to understand the physical world and probe the laws of nature. But are there limits to human knowledge? Are some things beyond the predictive powers of science...
A new unified theory of spin liquids offers insight into the relationship between magnetism and high-temperature superconductivity in cuprates...
Zhengwei Liu and Prof. Arthur Jaffe are leading a new project to expand quon, their pictorial math language developed to help understand quantum information theory, into new fields from algebra to M-theory.
Electrical confinement and manipulation of charge carriers in semiconducting nanostructures are essential for realizing functional quantum electronic devices. The unique band structure of atomically thin transition metal...
It’s possible that no one knows the electron as well as physicist Gerald Gabrielse. He once held one in a trap for ten months to measure the size of its internal magnet. When it disappeared, he searched for two days before accepting that it was gone. “You get kind of fond of your particles after a while,” he says...
A newly developed microscope is providing scientists with a greatly enhanced tool to study how neurological disorders such as epilepsy and Alzheimer's disease affect neuron communication...
Programming a computer is generally a fairly arduous process, involving hours of coding, not to mention the laborious work of debugging, testing, and documenting to make sure it works properly...
Prof. Peter Galison wins Abraham Pais Prize for History of Physics (APS) for his "outstanding contributions to the history of physics, especially for elucidating the complicated roles of experiment, instrumentation, and theory in the production of scientific knowledge, and for sharing his insights via award-winning scholarship, generous mentoring, and innovative filmmaking."
In the latest issue of Physical Review D, Mike Blake from MIT, Harvard physics postdoc Richard Davison, and Prof. Subir Sachdev describe their study of the thermal diffusivity DT in models of metals without quasiparticle excitations...
Quantum mechanics incorporates some very non-intuitive properties of matter. Quantum superposition, for example, allows an atom to be simultaneously in two different states with its spin axis pointed both up and down, or combinations in between...
Prof. Subir Sachdev is a recipient of the 2018 Lars Onsager Prize "for his seminal contributions to the theory of quantum phase transitions, quantum magnetism, and fractionalized spin liquids, and for his leadership in the physics community."
Physicists theorize that a new “traversable” kind of wormhole could resolve a baffling paradox and rescue information that falls into black holes...
Electrons and quasiparticles in solids could be trapped and moved using surface acoustic waves: see Katherine Wright, "Creating Electron Lattices with Sound Waves," Physics Oct 24, 2017.
https://physics.aps.org/synopsis-for/10.1103/PhysRevX.7.041019.
https://physics.aps.org/synopsis-for/10.1103/PhysRevX.7.041019.
An article in the Nov-Dec 2017 issue of American Scientist on pictorial mathematical languages features the Quon Language created by Harvard mathematicians Zhengwei Liu, Alex Wozniakowski, and Arthur Jaffe: Read D. Silver, "The New Language of Mathematics".
Nature has a way of making complex shapes from a set of simple growth rules. The curve of a petal, the swoop of a branch, even the contours of our face are shaped by these processes. What if we could unlock those rules...
Congratulations to Prof. Markus Greiner and Dr. Susanne Yelin for becoming 2017 Fellows of the American Physical Society!
Sketching Big Data
Wed, Oct 25 2017 @7:00pm
Science Center Hall C
One Oxford St., Cambridge, MA
Wed, Oct 25 2017 @7:00pm
Science Center Hall C
One Oxford St., Cambridge, MA
When a wavelength of light moves through a material, its crests and troughs get condensed or stretched, depending on the properties of the material. How much the crests of a light wave are condensed is expressed as a ratio called the refractive index...
Research found that altering the volume of a cell changed its internal dynamics, including the rigidness of the matrix lining the outer surface. In stem cells, removing water condenses the cell, influencing the stem cells to become stiff pre-bone cells...
Like a string of pearls, the spine is made of a series of similar vertebrae. A so-called segmentation clock creates this repetitive arrangement in developing embryos: Each time the clock ticks, a vertebra starts to form...
A future quantum computer might use photonic qubits to move information around, but the qubits need to be transferred to a stationary medium such as atoms to perform computations. Given the weakness of the light-matter interaction, the transfer often requires a large ensemble of atoms, which can collectively take on a single photonic qubit...
Understanding the differences between inanimate matter and living matter is one of the fundamental unsolved problems of science. Although this question might be framed as philosophical...
Steven Torrisi, a doctoral candidate in Kaxiras group, has been awarded a Department of Energy Computational Science Graduate Fellowship to support his Materials Physics research. DOE CSGF was established in 1991 to train...
Significant improvements in molecular trapping techniques increase the trappable molecular density by an order of magnitude, furthering the quest for directly loading optical tweezers and lattices...
Considerable interest in new single-photon detector technologies has been scaling in this past decade. Nowadays, quantum optics and quantum information applications are, among others, one of the main precursors for the accelerated...
Nicolaas (Nico) Bloembergen, Gerhard Gade University Professor, Emeritus, and 1981 Nobel Laureate, passed away at his home in Tucson, Arizona, on September 5, 2017.
Mahadevan Lab has developed a simple device to recreate complex birdsongs with the help of soft materials and mathematical modeling. The study finds that the inherent complexity in birdsongs might actually be the result of a simple controllable instability in the structure of the specialized organ used to create song, known as a syrinx...
The physics department is hosting a section of the MIT course, "How to Make (Almost) Anything," for the 4th time! This course covers a wide range of fabrication techniques, including laser cutting, 3D printing, PCB fabrication and design, embedded processing, molding and casting, and composites...
Confined to a two-dimensional plane, electrons in a strong magnetic field travel along the edge in one-dimensional quantum Hall channels that are protected against backscattering. These channels can be used as solid-state analogs of monochromatic beams of light...
Multiple descriptions of the half-filled Landau level, an exotic phase of matter seen in two-dimensional electron gases, have led to incompatible pictures that are widely believed to represent two distinct phases of matter. A new analysis suggests...
Self-healing materials aren’t new — researchers at SEAS have developed self-healing hydrogels, which rely on water to incorporate reversible bonds that can promote healing. However, engineering self-healing properties in dry materials — such as rubber — has proven more challenging...
Strongly interacting electrons lined up along a string can experience the so-called spin-charge separation, where the electrons "split" into effective carriers of spin and charge, which then move independently. This phenomenon has been observed, somewhat indirectly, in solids...
So, you’ve genetically engineered a malaria-resistant mosquito, now what? How many mosquitos would you need to replace the disease-carrying wild type? How many mosquitos would you need to replace the disease-carrying wild type? What is the most effective distribution pattern?...
Wednesday,
September 13, 2017
Nantasket Beach Resort, Hull, MA
(Transportation provided)
September 13, 2017
Nantasket Beach Resort, Hull, MA
(Transportation provided)
Harvard Physics grad student Seth Whitsitt, Prof. Subir Sachdev, and colleagues from Universität Innsbruck, recently published their study of the finite-size energy spectrum of the O(N) symmetric Wilson-Fisher conformal field theory (CFT) on the spatial torus...
In a new paper in Physical Review Letters, physicists in Prof. Mikhail Lukin's group, together with colleagues from Spain and Austria, propose a platform for studying topological effects in quantum optical systems which involves 2D atomic emitter arrays in optical lattices...
Information technologies of the future will likely use electron spin — rather than electron charge — to carry information. But first, scientists need to better understand how to control spin and learn to build the spin equivalent of electronic components, from spin transistors, to spin gates and circuits...
Congratulations to Prof. Daniel Jafferis for his promotion to Associate Professor of Physics!
The evolution of the amniotic egg — complete with membrane and shell — was key to vertebrates leaving the oceans and colonizing the land and air...
Particle interactions have a defining role in many properties of materials, but are often difficult to incorporate into a theoretical framework. Although theories that omit these interactions can describe...
In the quantum world our intuition for the motion of objects is strongly challenged and may sometimes even completely fail...
Quantum computers are experimental devices that offer large speedups on some computational problems. One promising approach to building them involves...
Although high-temperature superconductivity seems like a complicated phenomenon, its basic features are captured by the very simple...
This year's graduating seniors and PhDs are...
The Ellis Island Medals of Honor embody the spirit of America in their celebration of patriotism, tolerance, brotherhood and diversity...
Nabiha Saklayen, who is a 2017 graduating PhD in Physics, is a Program Director for the new campaign "I Am A Scientist." The campaign is a collaboration between artists, educators, and researchers in the Boston area...
Driving a quantum liquid - by subjecting it to some external force - can generate exotic phases of matter, but such phases are unstable. A suite of mathematical methods reveals the origins of these instabilities and identifies physical manifestations that can be observed in current experiments.
Physicists considering a foray into the study of molecules are often warned that "a diatomic molecule is one atom too many!". Now John Doyle and colleagues at Harvard University have thrown this caution to the wind and tackled laser cooling of a triatomic molecule with success
Graduate students Shannon Harvey and Shiang Fang won the 2017 Maurice and Gertrude Goldhaber Prize (for experimental and theoretical physics, respectively)...
Traditionally speaking, crystals - like salt, sugar or even diamonds - are simply periodic arrangements of atoms in a three-dimensional lattice. Time crystals, on the other hand, take that notion of periodically-arranged atoms and add a fourth dimension...
Ken Wilson’s invention of the Renormalization Group for systems exhibiting criticality – especially as it led to the quantitatively effective "epsilon expansion" – will be explored...
The quantum Hall effect supports a set of chiral edge states at the boundary of a two-dimensional system. A superconductor contacting these states can provide correlations of the quasiparticles in the dissipationless edge states...
Manufacturing complex bio-inspired shapes in the lab is often time consuming and costly. developed a new geometrical framework to explain how previous precipitation patterns grew and even predicted new structures...
Congratulations to all physics teaching fellows, teaching assistants, course assistants, lecturers, and preceptors who won the Derek Bok Center Certificates of Excellence and Distinction in Teaching!
Two awards celebrate Professor Lisa Randall as a humanist and distinguished scicentist: the Harvard Humanist Award and Simons Fellowship in Theoretical Physics...
It is well known that as plants grow, their stems and shoots respond to outside signals like light and gravity. But if plants all have similar stimuli, why are there so many different stem shapes? Why does a weeping willow grow downwards while nearby poison ivy shoots upwards?...
Dr. David Morin's new book, Special Relativity: For the Enthusiastic Beginner, is written for high school and college students learning about special relativity for the first time. It will appeal to the reader who has a healthy level of enthusiasm for understanding how and why the various results of special relativity come about...
Time crystals are hypothetical structures that pulse without requiring any energy — like a ticking clock that never needs winding. The pattern repeats in time in much the same way that the atoms of a crystal repeat in space...
Two Harvard graduate students want to make curing blood cancer or HIV as easy as pressing a button. Ph.D. candidates Nabiha Saklayen and Marinna Madrid have launched a startup to develop a simple, push-button device...
The Scientist as Sentinel
Wed, March 29, 2017 @7:00pm
Science Center Hall B
One Oxford St., Cambridge, MA
Wed, March 29, 2017 @7:00pm
Science Center Hall B
One Oxford St., Cambridge, MA
Galileo called mathematics the “language with which God wrote the universe.” He described a picture-language, and now that language has a new dimension. Prof. Arthur Jaffe, postdoc Zhengwei Liu, and researcher Alex Wozniakowski have developed...
Harvard Physics Monday Colloquium
February 27, 2017 @ 4:15PM
Lecture by Ramamurti Shankar,
John Randolph Huffman Professor of Physics, Yale University
February 27, 2017 @ 4:15PM
Lecture by Ramamurti Shankar,
John Randolph Huffman Professor of Physics, Yale University
In a new Nature Nanotechnology article, Hongkun Park and Donhee Ham (SEAS) groups describe a new tool they developed which is capable of high-precision electrophysiological recording of a large network of electrogenic cells...
Two-dimensional materials offer a promising platform for exploring condensed matter phenomena and developing technological applications. However, the reduction of material dimensions to the atomic scale poses a challenge...
On January 31, 2017, Harvard Physics celebrated Prof. Bertrand Halperin's 75th birthday. Watch the talks by Jim Eisenstein, Nigel Cooper, Catherine Kallin, Chandra Varma, Yuval Oreg, Pierre Hohenberg, and Partha Mitra
Nearly a century after it was theorized, Harvard scientists report they have succeeded in creating the rarest material on the planet, which could eventually develop into one of its most valuable...
Electron spins in semiconductors are promising qubits because their long coherence times enable nearly 109 coherent quantum gate operations. However, developing a scalable high-fidelity two-qubit gate remains challenging...
Prof. John Kovac has been named a recipient of the Presidential Early Career Award for Scientists and Engineers (PECASE). He was recognized for his work in advancing the most sensitive measurements of polarization of the cosmic microwave background...
Recent experiments have uncovered evidence of the strongly coupled nature of graphene: the Wiedemann- Franz law is violated by up to a factor of 20 near the charge neutral point...
The story of time crystals - whose lowest-energy configurations are periodic in time rather than space - epitomizes the creative ideas, controversy, and vigorous discussion that lie at the core of the scientific process. Originally theorized by Frank Wilczek in 2012, time crystals were met with widespread attention...
Quantum information can be pumped around the edges of a two-dimensional system of bosons, pointing to a possible way to distribute entanglement in quantum communication...
In spin ladder systems, a single characteristic length scale controls the behavior of the spin polarization. In in a recent article in Physical Review Letters, Harvard Physics graduate and currently an Associate in Lukin's group, Norman Yao...
Magnetic fields from neuronal action potentials (APs) pass largely unperturbed through biological tissue, allowing magnetic measurements of AP dynamics to be performed extracellularly or even outside intact organisms. To date, however, magnetic techniques...
Primordial features are one of the most important extensions of the Standard Model of cosmology, providing a wealth of information on the primordial Universe, ranging from discrimination between inflation and alternative scenarios...
The recent surge in research on metal-halide-perovskite solar cells has led to a seven-fold increase of efficiency, from ~3% in early devices to over 22% in research prototypes. Oft-cited reasons for this increase are...
Atoms, photons, and other quantum particles are often capricious and finicky by nature; very rarely at a standstill, they often collide with others of their kind. But if such particles can be individually corralled and controlled in large numbers, they may be harnessed as quantum bits, or qubits...
Electrons in a solid can team up to form so-called quasiparticles, which lead to new phenomena. Physicists have now studied previously unidentified quasiparticles in a new class of atomically thin semiconductors...
Scientists propose a new method for encapsulating single cells within tunable microgels which could boost efficacy of cell-based therapies and tissue engineering...
Small animals such as the roundworm C. elegans are excellent models for studying bacterial infection and host response, as well as for genetic and chemical screens. A key methodology is...
Researchers at Harvard University have succeeded in precisely controlling the interactions between photons and silicon-vacancy colour centres in a nanophotonic device for the first time....
By using superconducting materials through which electrons can move without any loss of energy, physicists hope to build quantum devices that would require significantly less power.
But there's a problem...
Read about Harvard physicists at CERN: Alvin Powell, "They Ponder the Universe" Harvard Gazette, October 12, 2016:
http://news.harvard.edu/gazette/story/2016/10/they-ponder-the-universe/
http://news.harvard.edu/gazette/story/2016/10/they-ponder-the-universe/
Morris Loeb Lectures in Physics by Ali Yazdani (Princeton), presented Oct 31 - Nov 3, 2016, are now available online!
The nonequilibrium dynamics of many-body quantum systems are tricky to study experimentally or theoretically. As an experimental setting, dilute atomic gases offer an advantage over electrons in metals. In this environment, the heavier atoms...
Exotic phases of matter can emerge from strong correlations in quantum many-body systems. Quantum gas microscopy affords the opportunity to study these correlations with unprecedented detail...
Congratulations to Prof. Jenny Hoffman who, for a third time in a row, won the national title in "North Coast 24," the USA Track & Field National Championship 24 Hour Run, held annually in Cleveland, Ohio!
In the last couple of years, deep learning techniques have transformed the world of artificial intelligence. One by one, the abilities and techniques that humans once imagined were uniquely our own have begun to fall to the onslaught...
Physicists have proposed a method for entangling hundreds of atoms, and then entangling a dozen or so groups of these hundreds of atoms, resulting in a quantum network of thousands of entangled atoms...
January 31, 2017
4:30pm – 7:00pm
Science Center Room 102
4:30pm – 7:00pm
Science Center Room 102
The analysis of Fourier-transformed scanning tunnelling microscopy images with subatomic resolution is a common tool for studying the properties of quasiparticle excitations in strongly correlated materials...
Topological quantum phases cannot be characterized by Ginzburg–Landau type order parameters, and are instead described by non-local topological invariants. Experimental platforms capable of realizing such exotic states now include...
The National Science and Technology Council (NSTC) has issued a new Report, Advancing Quantum Information Science: National Challenges and Opportunities, which prominently features results from several Harvard Physics research groups.
Postdoc Igor Pikovski has been awarded the Branco Weiss Fellowship by the ETH Zurich (Swiss Federal Institute of Technology). The Fellowship, which is given to outstanding postdoctoral researchers selected from a pool of international applicants...
A ℤ2 fractionalized Fermi liquid (FL*) is a novel state of strongly correlated quantum matter. Although it is metallic, it violates Luttinger’s theorem on the volume enclosed by the Fermi surface obeyed by conventional metals; this is possible due to the presence of emergent gauge excitations. In a new Physical Review B editors' suggested article describes a study of the superconducting states...
The Center for Elementary Particle and Astroparticle Physics KCETA of the Karlsruhe Institute of Technology, Germany, has awarded Prof. Lisa Randall the 2015 Julius Wess Award for her research on unifying the fundamental forces of physics.
A new study, co-authored by the father-and-son team of Prof. Christopher Stubbs and Alexander Stubbs
Cells that are electrically active and that also produce light for easy voltage monitoring could lead to new studies of heart arrhythmias and possibly bio-computing.
We may have glimpsed liquid hydrogen abruptly changing into metallic hydrogen, which is the same stuff in the core of Jupiter. But how and when does this transition from gas to liquid metal occur? How does it behave?... Continue reading the article by Leah Burrows: Unveiling Jupiter’s Mysteries.
While the novel theory may never live up to the early hype, its innovative tools have helped scientists for decades, and the best may be yet to come. (Read the overview of the history of string theory by Steve Nadis: Discover Magazine, June 14, 2016.)
Paul C. Martin, the John Hasbrouck Van Vleck Professor of Pure and Applied Physics, Emeritus, and former dean of the Harvard Division of Applied Sciences, passed away on June 19.
Prof. Ashvin Vishwanath, together with four colleagues, has been awarded the 2016 European Physical Society Condensed Matter Division Europhysics Prize "for the theoretical prediction, the experimental discovery and the theoretical analysis of a magnetic skyrmion phase in MnSi, a new state of matter"...
Harvard Physics and JILA cientists propose a space-based gravitational wave detector consisting of two spatially separated, drag-free satellites sharing ultra-stable optical laser light over a single baseline. Each satellite contains an optical lattice atomic clock, which serves as a sensitive, narrowband detector of the local frequency of the shared laser light...
Hawking, Perry, and Strominger suggest that black holes might have "soft hair," low-energy quantum excitations that release information when the black hole evaporates.
Large, bilayer graphene single crystals can be grown by oxygen-activated chemical vapour deposition...
The relation between structure and dynamics in glasses is not fully understood. A new approach based on machine learning now reveals a correlation between softness - a structural property - and glassy dynamics...
Topology and geometry are essential to our understanding of modern physics, underlying many foundational concepts from high-energy theories, quantum information, and condensed-matter physics. In condensed-matter systems...
Prof. John Huth talks to Boston Globe's Vijee Venkatraman about the 'low-tech' instruments he prefers to use for navigation on land and sea...
This year's graduating seniors and PhD are...
Experimental searches for the electron electric-dipole moment (EDM) probe new physics beyond the standard model. The current best EDM limit was set by the ACME Collaboration, constraining time-reversal symmetry (T) violating physics at the TeV energy scale...
Contacting solids that move relative to each other in a fluid environment abound in many settings such as soft contact lenses in eyes, animal joints, and bearings in rotating machinery. Motion is inevitably accompanied by flow and deformation...
Siyuan Sun has been awarded the Frederick Sheldon Traveling Fellowship, and Monica Pate and Shubhayu Chatterjee have been awarded a GSAS Merit Fellowship.
JILA physicists have extended the capability of their powerful laser "combing" technique to identify the structures of large, complex molecules of the sort found in explosives, pharmaceuticals, fuels and the gases around stars...
Prof. L. Mahadevan has been named a Fellow of the Royal Society of London. For more information, please read the SEAS announcement.
David Nelson, together with Ariel Amir (SEAS; formerly Harvard Physics Junior Fellow) and Naomichi Hatano (UTokyo) analyzed the eigenvalues and eigenvectors of certain asymmetric tridiagonal matrices in a recent Phys. Rev. E article. The authors found...
As population growth continues to outpace development of water infrastructure in many countries, desalination (the removal of salts from seawater) at high energy efficiency will likely become a vital source of fresh water...
Graduate students Michael Coughlin and Christopher Frye won the 2016 Maurice and Gertrude Goldhaber Prize (for experimental and theoretical physics, respectively).
Metallic hydrogen has been produced in the laboratory in a diamond anvil cell at pressures in the 1.2 to 1.7 megabar regime and at high temperatures...
Graduate students David Levonian and Harry McNamara have won National Defense Science and Engineering Graduate (NDSEG) Fellowships. NDSEG is awarded to U.S. citizens and nationals who intend to pursue a doctoral degree...
Little string theories are UV complete nonlocal six-dimensional theories decoupled from gravity in which there is an intrinsic string scale. In this paper, we present a systematic approach to the construction of supersymmetric LSTs...
Monday, 4/18/16 @4:00pm
Sanders Theatre, 45 Quincy St.
Admission by ticket only
(SOLD OUT)
Simulcast locations available...
Sanders Theatre, 45 Quincy St.
Admission by ticket only
(SOLD OUT)
Simulcast locations available...
The first results from the NOvA experiment, which set new constraints on charge-parity violation in neutrinos and on the ordering of neutrino masses, have been reported in the latest issue of Physical Review Letters. Those results are from the first search...
Hydrogen and its isotopes, deuterium and hydrogen deuteride (HD), are the simplest and most abundant elements in the universe. At a sufficient pressure the solids are predicted to dissociate into atoms and become metallic with possible...
The new book by David Morin, Probability: For the Enthusiastic Beginner, is written for high school and college students learning about probability for the first time. It will appeal to the reader who has a healthy level of enthusiasm...
Congratulations, Jacob!
Can science explain the ancient Marshallese methods of open-water navigation by wave piloting? Prof. John Huth and colleagues hope to find out...
Graduate students Benjamin Augenbraun, Rebecca Engelke, and Geoffrey Ji have been awarded 2016 Graduate Research Fellowships by National Science Foundation. The Fellowship Program "recognizes and supports outstanding graduate students...
A new Physical Review Letter by Prof. Philip Kim and colleagues from Columbia University, Rice University, and National Institute for Material Science, Tsukuba, Japan, reports the enhancement of the thermoelectric power (TEP) in graphene...
Congratulations to Prof. Andrew Strominger on being awarded a Simons Fellowship in Theoretical Physics by the Simons Foundation!
Congratulations to Prof. Howard Georgi for receiving the 2016 Mentoring Award of the Division of Particles and Fields of the American Physical Society. The Award recognizes Prof. Georgi's "unique dedication to mentoring...
One Catastrophe After Another: The Big Bang, Death of the Dinosaurs, Ice Ages, Global Warming, and Beyond
Wednesday, April 13, 2016 @ 8:00pm
Geological Lecture Hall 100, 24 Oxford Street, Cambridge MA
Wednesday, April 13, 2016 @ 8:00pm
Geological Lecture Hall 100, 24 Oxford Street, Cambridge MA
The objective of the Lee Osheroff Richardson Science Prize is to promote and recognize the novel work of young scientists working in the fields of low temperatures, high magnetic fields or surface science in North and South America.
Optical lattices are a promising platform for simulating the many-body physics that occurs in solids. In lattices filled with cold bosonic atoms, “quantum microscopy” makes it possible to watch quantum phase transitions as they unravel...
The drying or water-retention process cannot typically be observed directly in porous materials due to their opacity. In a new study, Prof. David Weitz and colleagues from SEAS and Laboratoire Navier, Université Paris-Est, relied on a simple glass channel...
The currently prevalent one-size-fits-all approach to designing digital products inadvertently - but inevitably - leads to discrimination by making some people systematically a little more likely to succeed than others...
Explore black holes, gravity, and quantum systems in a series of Morris Loeb Lectures in Physics presented by Juan Maldacena, Carl Feinberg Professor at the Institute for Advanced Study in Princeton, New Jersey, whose work focuses on quantum gravity...
In a recent paper in Physical Review B, graduate students Andrew Lucas and Jesse Crossno, Kin Chung Fong from Raytheon BBN Technologies, and professors Philip Kim and Subir Sachdev describe developing a general hydrodynamic framework...
Postdoc Vivek Venkatachalam, with the help of colleagues in Prof. Aravinthan Samuel's Lab, UMass Worcester, and University of Toronto, built a microscope capable of uncovering representations of sensory input and motor output of individual neurons...
Interactions between particles in quantum many-body systems can lead to collective behavior described by hydrodynamics. One such system is the electron-hole plasma in graphene near the charge neutrality point, which can form...
Nuclear magnetic resonance spectroscopy is a powerful tool for the structural analysis of organic compounds and biomolecules, which, unril now, typically required macroscopic sample quantities...
Prof. L. Mahadevan and colleagues from SEAS, Finland and France have provided the first experimental evidence of the theory of differential growth and demonstrated that physical forces — not just biochemical processes alone — play a critical role...
Origami describes rules for creating folded structures from patterns on a flat sheet, but does not prescribe how patterns can be designed to fit target shapes. In an article in Nature Materials, Prof. L. Mahadevan and colleagues describe...
In the fall of 2015, twenty-one students representing a diverse cross-section of Harvard community participated in the Harvard Section of the "How to Make (Almost) Anything" class. This course was taught by MIT professor Neil Gershenfeld and integrates a wide range of fabrication modalities. The Harvard section was led by Rob Hart and members of the Instructional Physics Labs...
Professors L. Mahadevan and Jennifer Lewis, and a team of scientists at the Wyss Institute, SEAS, and University of Illinois Urbana-Champaign have evolved their microscale 3D printing technology to the fourth dimension, time...
Harvard Physics grad Greg Kestin (PhD 2014) has published the first video in a new "What The Physics?!" series. Each episode will explore something surprising or really interesting related to physics...
The past few years have brought foundational results in particle physics with both the Higgs discovery and the measurement of "theta 13" the last of the unknown mixi2ng angles. With a large value of theta 13, the neutrino community is poised...
Do you want to make moving art? Are you curious about making things move with simple computer programs? Come to the Physics teaching labs, and create interactive kinetic sculpture programmed with Arduino microcontroller boards...
In the mid 1970s, Stephen Hawking made a string of unnerving discoveries about black holes—that they could evaporate, even explode, and destroy all information about what had fallen in...
The new film, which explores deep complexity of nuclear waste disposal, focuses on two nuclear containment facilities in Florida and New Mexico.
Prof. Vishwanath will be joining the Harvard Department of Physics in July, 2016.
Viruses such as influenza spread so effectively, and as a result can be so deadly to their hosts, because of their ability to spontaneously self-assemble in large numbers. If researchers can understand how viruses assemble, they may be able to design drugs...
Entanglement is one of the most intriguing features of quantum mechanics. It describes non-local correlations between quantum objects, and is at the heart of quantum information sciences...
Certain bacteria swim by rotating a single helical filament, moving forwards and backwards with similar speeds. The discovery that the torque is not equal in both directions links them to multifilament species with opposite filament handedness.
Black hole horizons have been shown to have characteristic entropies and temperatures. A new investigation shows similarities between the entropy of a black hole and a metallic state of high-temperature superconductors.
Exploiting the light-like properties of carriers in graphene could allow extreme non-classical forms of electronic transport to be realized. In this vein, finding ways to confine and direct electronic wavesthrough nanoscale...
The modeling of the electronic structure is the key to understanding layered transition-metal dichalcogenides heterostructures. In a new, editors-recommended paper in Physical Review B, Prof. Efthimios Kaxiras and...
The capture and storage of solar energy at the individual level drives inextricably towards the heart of this energy challenge by addressing the triumvirate of secure, carbon neutral and plentiful energy...
In a Letter in Nature Physics, an international team of reserchers from Brookhaven National Laboratory, Cornell University, Harvard, and other institutions, have characterized a key arrangement of electrons in a high-temperature superconductor...
Prof. Subir Sachdev was awarded the Dirac Medal for the Advancement of Theoretical Physics by University of New South Wales and the Australian Institute of Physics...
Sixty-six million years ago, an object the size of a city descended from space to crash into Earth, creating a devastating cataclysm that killed off the dinosaurs, along with three-quarters of the other species on the planet. What was its origin?...
This year’s Julius Springer Prize for Applied Physics will be awarded to Prof. Mikhail Lukin "for his inspiring contributions at the scientific interface of quantum optics and nanophotonics...
Prof. Jene Golovchenko is a co-recipient of the Fannie Cox Prize for Excellence in Science Teaching. The prize is awarded annually in recognition of exceptional teaching in introductory science classes...
Metamaterials with a refractive index of zero exhibit physical properties such as infinite phase velocity and wavelength. However, there is no way to implement these materials on a photonic chip, restricting the investigation and application of zero-index phenomena to simple shapes and small scales...
Benjamin Augenbraun, Harvard Physics graduate student in Prof. Doyle's group, received the 2015 LeRoy Apker Award "for high-precision measurement of the DC Stark shift..."
What happens when an isolated quantum system is set in motion from an initial nonequilibrium state that possesses certain orders? In classical thermodynamics, this problem is exemplified by the irreversible expansion of a gas in an isolated chamber after suddenly doubling the chamber size...
60 of the Physics Department’s postdoctoral and research scholars enjoyed the Third Annual Retreat at MIT Endicott House in Dedham, MA. The day included talks by Dennis Overbye, Deputy Science Editor, New York Times...
Congratulations to Professors Andrew Strominger and Cumrun Vafa for winning the 2016 Dannie Heineman Prize for Mathematical Physics!
Drying suspensions often leave behind complex patterns of particulates, as might be seen in the coffee stains on a table. But how does the transition between different types of patterning occur?...
Harvard’s Center for Nanoscale Systems (CNS) has been awarded a $5 million nanotechnology research grant from the National Science Foundation (NSF)...
On Friday, September 18, Harvard Physics faculty and their families gathered in the Loeb House to celebrate the 90th birthday of Roy J.Glauber, Mallinckrodt Professor of Physics, Emeritus...
We can launch an energy revolution that drastically decreases CO2 emission and other deleterious consequences associated with fossil fuel burning. Energy extraction can be cut by more than 50% by converting fossil fuel burning engines...
Physicists have taken another step toward building objects out of photons. In the latest issue of Physical Review Letters...
SciBox, the experimental learning space in the Science Center, serves as the rehearsal venue for the Ig Nobel Prize Ceremony's mini-opera...
Surface acoustic waves may work as a “quantum bus” that carries information to different parts of a quantum computer...
As builders go, termites don’t have many tools at their disposal — just their bodies, soil, and saliva. For guidance they have nothing to go on save variations in wind speed and direction and fluctuations in temperature as the sun rises and sets...
Amorphous nanoparticles often dissolve more rapidly than their crystalline counterparts, which can be useful in applications such as drug delivery. Professors Michael Brenner and David Weitz, together with colleagues from SEAS...
Medical implants mimic the softness of human tissue by mixing liquids such oil with long silicone polymers to create a squishy, wet gel. While implants have improved dramatically over the years, there is still a chance of the liquid leaking...
Quantum diamond microscopes are one of Ron Walsworth's passions. He is a physicist at the Harvard-Smithsonian Center for Astrophysics (CFA) and in Harvard's physics department...
This conference brought together a diverse group of physicists and educators whose career paths have intersected with Andy's and who share his passion for Physics. Get more information and see the slideshow of the event.
Pushing the frontiers of condensed-matter magnetism requires the development of tools that provide real-space, few-nanometre-scale probing of correlated-electron magnetic excitations under ambient conditions...
The central-spin problem is a widely studied model of quantum decoherence. Dynamic nuclear polarization occurs in central-spin systems when electronic angular momentum is transferred to nuclear spins and is exploited in quantum information processing for coherent spin manipulation...
Electron microscopy is a powerful technique for taking snapshots of particles or images at near-atomic resolution. An international group of scientists studied free-floating platinum nanoparticles using electron microscopy and liquid cells...
Astronomy grad student Gregory Green, Ph.D. '12 Edward Schlafly, Prof. Douglas Finkbeiner, and colleagues from Max-Planck-Institut (Heidelberg), Université de Strasbourg, GMTO Corporation, U. Durham, U. Hawaii at Manoa, and Princeton, published a 3D map of interstellar dust reddening...
In Particular, a new ATLAS podcast by Harvard Physics alumnae Tova Holmes '11 and Laura Jeanty Ph.D. '13, is about physics and the process of discovering physics at the high energy frontier.
Norman Yao (PhD 2014) has been awarded the 2015 Prize for Outstanding Doctoral Thesis Research in Atomic, Molecular or Optical Physics (the DAMOP Thesis Prize) for his PhD thesis...
Andreas (Andy) Koehler, who was a Director of the Harvard Cyclotron Laboratory, passed away on May 16, 2015, at the age of 85...
Harvard Physics postdoc and ITAMP fellow Igor Pikovski is the lead author of a Nature Physics article describing a surprising link between gravity and quantum mechanics...
The Rashba effect, discovered in 1959 by a Soviet-American theoretical physicist Emmanuel Rashba, now a Harvard Physics Research Scholar, continues to supply fertile ground for fundamental research and applications...
When I first caught wind that there was going a People's Sculpture Race in Cambridge, writes Kim Bernard, the 2015 Harvard Physics Artist-in-Residence, I proposed the idea, to the Wednesday physics lunch gang, that we put our heads together...
In a recent editor-suggested article in Physical Review Letters, grad student Junhyun Lee and Prof. Subir Sachdev consider the interplay between the antiferromagnetic and Kekulé valence bond solid orderings in the zero energy Landau levels...
Prof. Markus Greiner and members of his lab test a new technique for imaging of individual fermionic lithium atoms in a single layer of a 3D optical lattice. To preserve the density distribution during fluorescence imaging...
The Physics Department is delighted to announce the promotion of Matthew Schwartz to Professor
Magnetic resonance techniques not only provide powerful imaging tools that have revolutionized medicine, but they have a wide spectrum of applications in other fields of science such as biology, chemistry...
Light-driven chemical reactions on semiconductor surfaces have potential for addressing energy and pollution needs through efficient chemical synthesis; however, little is known about the time evolution of excited states...
Physics graduate students Aaron Kabcenell, Tomo Lazovich, and Ruffin Evans win this year's NDSEG asnd Merit scholarships...
Lecture I: "Surveying the Southern Skies with the SkyMapper Telescope"
Colloquium: "Type 1A Supernovae, the Accelerating Cosmos, and Dark Energy"
Lecture II: "After the Dark Ages: The First Stars"
Colloquium: "Type 1A Supernovae, the Accelerating Cosmos, and Dark Energy"
Lecture II: "After the Dark Ages: The First Stars"
Prof. Xiaowei Zhuang and members of her group have devised a method of visualizing RNA molecules inside cells so that the identity, location, and abundance of more than 1,000 different RNA species can be determined at the same time...
Atom- and site-resolved experiments with ultracold atoms in optical lattices provide a powerful platform for the simulation of strongly correlated materials. In Rapid Communication in Physical review A*...
The intersystem crossing (ISC) is an important process in many solid-state atomlike impurities. For example, it allows the electronic spin state of the nitrogen-vacancy (NV) center in diamond to be initialized and read out using optical fields at ambient temperatures...
Assembling inorganic nanomaterials on graphene is of interest in the development of nanodevices and nanocomposite materials, and the ability to align such inorganic nanomaterials on the graphene surface is expected to lead to improved functionalities...
At long last, here is the thoroughly revised and updated third edition of the hugely successful Art of Electronics. It is widely accepted as the best single authoritative book on electronic circuit design...
Physics graduate students Aaron Kabcenell, Ellen Klein, Sabrina Pasterski, Emma Rosenfeld, Julia Steinberg, Alexandra Thomson, and Elana Urbach receive this year's NSF, Hertz Foundation, NDSEG, and NSERC Fellowships!
This seminar is a lecture from Life Sciences 1a, a course taken by approximately 500 freshmen each year as an introduction to chemistry and biology. The course covers the fundamentals of chemistry and their application to biology...
Efficient readout of individual electronic spins associated with atomlike impurities in the solid state is essential for applications in quantum information processing and quantum metrology...
While probing the mystery of how some bacteria move across surfaces, Prof. Howard Berg and researchers in his group, Abhishek Shrivastava and Pushkar Lele, have discovered a kind of rotary motor...
Searches for Earth-like exoplanets using the periodic Doppler shift of stellar absorption lines require 10 cm/s precision in the measurement of stellar radial velocity (RV) over timescales of years...
The rapid squirt of a proteinaceous slime jet endows velvet worms (Onychophora) with a unique mechanism for defence from predators and for capturing prey by entangling them in a disordered web that immobilizes their target...
Full control over the dynamics of interacting, indistinguishable quantum particles is an important prerequisite for the experimental study of strongly correlated quantum matter and the implementation of high-fidelity quantum information processing...
The results of the joint analysis of BICEP2/Keck Array and Planck Collaborations have been published in the latest issue of Physical Review Letter. BICEP2 and Keck Array have observed the same approximately 400 deg2...
A search for new physics in production of a pair of Higgs bosons finds a modest excess of events, 2.4 standard deviations above the background-only hypothesis...
Whether the non-Fermi-liquid behavior of fermionic systems, developing in the proximity of a quantum critical point, is stable or not toward the formation of Cooper pairs is a challenging open question in the physics of strongly correlated systems...
In a Letter in Nature Materials, Prof. L. Mahadevan and colleagues from Brandeis University, Florida Atlantic University, and Universiteit Leiden, describe directly measuring the sliding forces between two bundled F-actin filaments...
Professor Kang-Kuen Ni has been named one of the 2015 Sloan Research Fellows by the Alfred P. Sloan Foundation. The Fellowships seek to stimulate fundamental research by early-career scientists and scholars of outstanding promise.
3D printing enables one to rapidly design and fabricate materials in arbitrary shapes on demand. Prof. Lewis will introduce the fundamental principles that underpin 3D printing techniques...
A single M5-brane probing G, an ADE-type singularity, leads to a system which has G × G global symmetry and can be viewed as "bifundamental" (G, G) matter. For the A N series, this leads to the usual notion of bifundamental matter. For the other cases it corresponds to a strongly interacting (1, 0) superconformal system in six dimensions...
Grad student Michael Shulman and postdoc Marc Warner survey the state of condensed matter physics for the past nine years in a recent arXiv article...
Prof. Michael Brenner and colleagues from SEAS and Kavli Institute for Bionano Science and Technology have published an article in the latest issue of Nature Communication which describes their study of the spontaneous assembly...
Prof. Eugene Demler has been honoured as a 'Distinguished Scholar' by the Max Planck Institute of Quantum Optics. This program has been launched by MPQ two years ago "in order to offer outstanding scientists from other research institutes worldwide...
Energy can be neither created nor destroyed—but it can be wasted. The United States wastes two-thirds of its energy, including 80 percent of the energy used in transportation...
Prof. Xiaowei Zhuang has received the 2015 National Academy of Science Award in Molecular Biology...
Precise coherent control of the individual electronic spins associated with atomlike impurities in the solid state is essential for applications in quantum information processing and quantum metrology...
Kim Bernard, visiting Artist-in-Residence in the Physics Department, has set up a studio in SciBox 302 for the spring semester. Bernard will be sitting in on physics labs and lectures, using the departments equipment to create new work and is looking forward to collaborating with students, faculty and staff...
Colloidal particles have been used as atom mimics and are often connected together using complementary DNA strands. Postdoc W. Benjamin Rogers and Prof. Vinothan Manoharan controlled the strength of the colloidal "bond" by using a set of competing...
A showcase of projects from the Harvard section of the Fall '14 MIT course "How to Make (Almost) Anything" (February 3, 2015). Watch the slideshow.
Thermally induced electrical currents, known as Johnson noise, cause fluctuating electric and magnetic fields in proximity to a conductor. These fluctuations are intrinsically related to the conductivity of the metal...
Prof. Eugene Demler has been elected the recipient of a Carl Friedrich Siemens Research Award. This award is conferred in recognition of lifetime achievements in a science field, without any restrictions being placed on the choice of science discipline...
The Sound waves propagating through the plasma of the Universe only 400,000 years after the Big Bang now offer some of our most precise measures of the composition and history of the Universe...
The nitrogen-vacancy (NV) defect center in diamond has demonstrated great capability for nanoscale magnetic sensing and imaging for both static and periodically modulated target fields. However, it remains a challenge...
The physics Graduate Student Council (GSC) organized the Harvard Physics Research Poster Session with the intent of increasing inner-departmental communication between graduate students...
On January 21, 2015, Willy Shih, Robert and Jane Cizik Professor of Management and Practice at the Harvard Business School, gave a leadership workshop to 30 of our Research Scholars. In teams of five, with each person assigned a specific role...
In this Wintersession class, students learned to make small soldered electronic circuits from copper-covered boards or copper film, either for their research or just for fun, using the Modela mill and the vinyl cutter...
Topological excitations keep fascinating physicists since many decades. While individual vortices and solitons emerge and have been observed in many areas of physics, their most intriguing higher dimensional topological relatives, skyrmions...
Nuclear spin imaging at the atomic level is essential for the understanding of fundamental biological phenomena and for applications such as drug discovery. The advent of novel nanoscale sensors promises to achieve the long-standing goal of single-protein...
Graduate student Aaron Meisner and Prof. Douglas Finkbeiner apply the Finkbeiner et al. two-component thermal dust emission model to the Planck High Frequency Instrument maps...
Kim Bernard, visiting Artist-in-Residence in the Physics Department, has set up a studio in SciBox 302 for the spring semester. She will be working with students in the Physics 15a lab to integrate kinetic art making into existing and new lab projects as natural extensions of the projects themselves.
Henry is a sophomore Physics concentrator; Sabrina is a graduate student in the Harvard Center for the Fundamental Laws of Nature; Tony graduated from our department with a PhD in astrophysics in 2013...
Nuclear magnetic resonance (NMR) spectroscopy and magnetic resonance imaging (MRI) provide non-invasive information about multiple nuclear species in bulk matter, with wide-ranging applications...
The silicon-vacancy (SiV‾) color center in diamond has attracted attention because of its unique optical properties. It exhibits spectral stability and indistinguishability that facilitate efficient generation of photons...
Single-crystal diamond, with its unique optical, mechanical and thermal properties, has emerged as a promising material with applications in classical and quantum optics. However, the lack of heteroepitaxial growth...
Prof. Lisa Randall and postdoc Jakub Scholtz investigate a possible explanation for the planar distribution of satellite dwarf galaxies with high dark matter content...
The new publication, which is a collaboration between Harvard Physics faculty, students, and staff, will be issued annually.
The nature of the pseudogap regime of cuprate superconductors at low hole density remains unresolved. It has a number of seemingly distinct experimental signatures: a suppression of the paramagnetic spin susceptibility at high temperatures, low-energy electronic excitations that extend over arcs in the Brillouin zone...
A recent 'Editor's Suggested' article in Physical Review A is by members of Demler's research group Fabian Grusdt, Aditya Shashi, and Dmitry Abanin. Together with Prof. Demler, they consider a single-impurity atom confined to an optical lattice and immersed in a homogeneous Bose-Einstein condensate...
Grad student Debanjan Chowdhury and Prof. Subir Sachdev analyze a candidate theory for the strange metal near optimal hole-doping in the cuprate superconductors...
How do you build a short pulse laser only from materials available 100 years ago? How do you make color holograms, explore how a violin works, measure the "Ether wind"? How can you trap particles with light or build a flute?...
Colloidal glasses, bird feathers, and beetle scales can all show structural colors arising from short-ranged spatial correlations between scattering centers. Unlike the structural colors arising from Bragg diffraction in ordered materials like opals...
Many species of fungus-harvesting termites build largely empty, massive mound structures which protrude from the ground above their subterranean nests. It has been long proposed that the function of these mounds is to facilitate exchange of heat, humidity, and respiratory gases...
Graduate students Dennis Huang, Siyuan Sun, Bo Liu, and Shu-Heng Shao are the winners of the 2015 Maurice and Gertrude Goldhaber Prize. The prize is awarded annually by the department to its most outstanding current PhD students...
The ATLAS Collaboration has observed a new excited state of the Bc± meson at 6842 MeV by reconstructing its decay. The mass and decay are consistent with QCD predictions for this excited state.
Congratulations to our November PhD graduates David Benjamin, Willy Chang, Max Lavrentovich, James M
On November 14, 2014, experts from fields as far-ranging as human cognitive neuroscience and neural computation, animal life science, anthropology and culture, space science, current and future technology, and emergency management converged on Radcliffe’s annual Science Symposium...
If physicists want to find their long-sought "theory of everything," they have to get small. And Nobel Prize-winning theoretical physicist Steven Weinberg (U Texas, Austin) thinks he knows roughly how small...
Magnetic fields are proposed to have played a critical role in some of the most enigmatic processes of planetary formation by mediating the rapid accretion of disk material...
A new paper published in Astroparticle Physics by an international group of physicists and astronomers, including Harvard's Prof. John Kovac...
La2−xSrxCuO4 nanowire devices have been fabricated and characterized using electrical transport measurements. Nanowires with widths down to 80 nm are patterned...
The Oskar Klein Centre for Cosmoparticle Physics has awarded Prof. Andrew Strominger the 2014 Oskar Klein Medal for his "key contributions to string theory and quantum gravity..."
For plenty of runners, finishing a marathon is the ultimate achievement, something they do once in a lifetime, if at all. For Prof. Jenny Hoffman, covering the 26.2 miles of a marathon was just a good place to start…
Professor Christopher Stubbs is a member of the High-Z Supernova Search Team which, together with the the Supernova Cosmology Project, have been awarded the 2015 Breakthrough Prize in Fundamental Physics "for the most unexpected discovery ..."
Electrodes and electrode arrays capable of recording electrical signals from neurons come in an increasing number of shapes and sizes, and researchers are continuously adding capabilities...
Members of the Optical Society, a leading professional organization for those who study the science of light, have elected Prof. Eric Mazur to serve as OSA vice president in 2015...
11/20/14 @6:00PM
SCIENCE CENTER HALL D
The two most important achievements in physics in the 20th century were the discoveries of the theory of relativity and quantum physics...
SCIENCE CENTER HALL D
The two most important achievements in physics in the 20th century were the discoveries of the theory of relativity and quantum physics...
Harvard graduate students and staff have started two new queer groups this fall to better serve and unite the non-undergraduate BGLTQ community...
An NMR scheme based on nitrogen vacancies in diamond images the spins of individual protons...
Harvard Physics Research Scientist Vincent Coljee is one of finalists in the international group of 21 volunteers selected for possible participation in Mars Arctic 365 mission by the Mars Society, dedicated to furthering the exploration and settlement...
Prof. Howard Berg was awarded the 2014 Raymond and Beverly Sackler International Prize in Biophysics "for pioneering contributions to understanding the physical mechanisms…"
In this talk Professor Franklin will explain how physicists search for new particles, such as the Higgs boson, at the Large Hadron Collider, and specifically what they found...
Thomson-Reuters Highly Cited Researchers represents some of world’s leading scientific minds. Over 3000 researchers (144 of them in physics) earned the distinction by writing the greatest numbers of reports...
Unwanted interaction between a quantum system and its fluctuating environment leads to decoherence and is the primary obstacle to establishing a scalable quantum information processing architecture. Strategies such as environmental and materials engineering, quantum error correction...
The Harvard Physics Teaching Lab is hosting a section of a course taught by Neil Gershenfeld (MIT) and offered jointly at MIT and Harvard, "How to Make (Almost) Anything." The students work together in the Science Center teaching labs to complete each week's assignment in fabrication...
Impurities in a crystal lattice are the key ingredient in recent efforts to control and apply the coherence and entanglement of spins in condensed-matter systems. The idea that quantum mechanical machines can perform certain information-processing tasks much faster...
Cherry Murray, Armstrong Professor of Engineering and Applied Sciences, Professor of Physics, and Dean of School of Engineering and Applied Sciences, is to receive the National Medal of Technology and Innovation.
The Gordon and Betty Moore Foundation, after a national competition, has selected nineteen Moore Experimental Investigators in Quantum Materials, among them three Harvard Physics professors: Jenny Hoffman, Philip Kim, and Amir Yacoby.
How will we do research in the upcoming decades? Postdocs from eight institutions in the Boston area organized a symposium to discuss the future of research...
A monthlong celebration of 60 years of science at CERN, by the Harvard Physics Department and swissnex Boston...
A major limitation in the performance of solar cells happens within the photovoltaic material itself: When photons strike the molecules of a solar cell, they transfer their energy, producing quasi-particles called excitons...
Congratulations to physics teaching fellows, teaching assistants, course assistants, and preceptors who won the Derek Bok Center teaching awards!
Inertial aquatic swimmers that use undulatory gaits range in length L from a few millimetres to 30 metres, across a wide array of biological taxa. Prof. L. Mahadevan, working with a postdoctoral fellow Mattia Gazzola and a colleague Mederic Argentina from the University of Nice...
"Are we alone or is the universe teeming with life?" is one of the most fundamental questions in science. The answer could have a dramatic impact on society and culture...
Problems and Solutions in Introductory Mechanics, CreateSpace Independent Publishing, 2014
The Blavatnik Awards for Young Scientists supports and honors outstanding scientists and engineers by encouraging and accelerating innovation through unrestricted funding and by recognizing their extraordinary achievements as vital contributions to science and society.
Schedule of Events:
9:00 – 10:00 am Breakfast in the G1 area, Jefferson 260
10:00 – 11:00 am Academic Presentation, Jefferson 250...
Dr. Beranek, an American acoustics expert, former MIT professor, a founder and former president of Bolt, Beranek and Newman, and Harvard Physics alumnus, has celebrated his 100th birthday!
The convolutions of the human brain are a symbol of its functional complexity and correlated with its information processing capacity. Conversely, loss of folds is correlated with loss of function. But how did the outer surface of the brain, the layered cortex of neuronal gray matter, get its folds?
Jacob Barandes tought Introduction to Theoretical Physics this summer to a class of 25, mostly high-school students...
The Harvard Library launched a new search tool called HOLLIS+. This tool enables discovery of the bulk of the Harvard Library resources in a single unified search, includes finding books and articles together...
Professor Andrew Strominger is one of three scholars awarded the 2014 Dirac Medal by the Abdus Salam International Centre for Theoretical Physics for their "crucial contributions to the origin, development and further understanding of string theory"...
Physics graduate students Erik Bauch and Georg Kucsko have developed an online tool for collaborative annotation of scientific publications, Open Rev., which enables scientists discuss science openly, independently of publishers and impact factors...
Topological insulators are a newly discovered phase of matter characterized by gapped bulk states surrounded by conducting boundary states. Since their theoretical discovery, these materials have encouraged intense efforts to study their properties and capabilities...
A number of methods have been proposed recently which exploit multiple highly-correlated interpretations of events, or of jets within an event. For example, Qjets reclusters a jet multiple times and telescoping jets uses multiple cone sizes...
WHEN: Thursday, September 18, 2014
8:00AM - 8:00PM
WHERE: Rolling Ridge Retreat and Conference Center, North Andover, MA
All-optical electrophysiology—spatially resolved simultaneous optical perturbation and measurement of membrane voltage—would open new vistas in neuroscience research. Professor Adam Cohen and colleagues from Harvard, MIT, University of Alberta, Canada, and Beijing Genomics Institute–Shenzhen, China...
Motivated by colloidal lithography, Harvard Physics Grad Student Sarah Kostinski, SEAS Postdoc Elizabeth Chen, and Professor Michael Brenner studied the problem of characterizing periodic planar patterns formed by shadows of spheres. The set of patterns accessible to shadow lithography spanned by lattice types...
Congratulations to Harvard Physics graduate students Elizabeth Jerison and Debanjan Chowdhury who won the Harvard Merit Scholarship and Nabiha Saklayen who was awarded an International Student Research Fellowship by the Howard Hughes...
The Department of Physics would like to congratulate Professor Masahiro Morii on his appointment
A quantum network of atomic clocks could create even more accurate and stable time-keeping devices than present atomic clocks, reports a paper published online this week in Nature Physics. Such a network could have technological applications as well as provide a resource for Earth science studies and fundamental tests...
Melissa Franklin, an experimental particle physicist, has had a career of firsts, some scientific, some social. Read an Interview with Prof. Melissa Franklin in the Harvard Gazette.
Among physics students there exists a wide variety of misconceptions, generally thought to be robust and resistant to change. In their Commentary in Nature Physics, Professor Eric Mazur and colleagues from SEAS and John Abbott College, Montreal...
Understanding the dynamics of quantum systems without long-lived excitations (quasiparticles) constitutes an important yet challenging problem. Although numerical techniques can yield results for the dynamics in imaginary time, their reliable continuation to real time has proved difficult...
Mehrtash Babadi, Yang Ting Chien, Sujit Datta, Joshua Dorr, Ben Feldman, Jerome Fung, Michael Gullans, Angela Kou, Andrew McCormick, Matthew Barr, Jennifer Hou, Yat Shan Au, Chi-Ming Chang, Yiwen Chu, Michael Grinolds, Rodrigo Guerra...
The nature of fractional quantum Hall (FQH) states is determined by the interplay between the Coulomb interaction and the symmetries of the system. The unique combination of spin, valley, and orbital degeneracies in bilayer graphene is predicted to produce an unusual and tunable sequence of FQH states...
Harvard Physics Junior Fellow Ariel Amir is moving to SEAS to become an Assistant Professor of Applied Mathematics and Applied Physics. His research interests encompass several fields, amongs them theory of glasses, biophysics, and structural coloration...
Graduate student Andy Yen is one of the founders of ProtonMail: the first end-to-end encrypted email service which is web based and easy to use. PhotonMail is said to be so secure that its data is inaccessible even to ProtonMail's own servers and and thus cannot be cracked...
Prof. Eric Mazur is the first winner of the Minerva Prize for Advancements in Higher Education. In recognizing Dr. Mazur for his significant contributions to improving higher education, the Minerva Academy specifically noted his development of Peer Instruction...
Superconductivity arises from pairing of electrons on the Fermi surface. Professors Jenny Hoffman and Subir Sachdev, with colleagues from Harvard, MIT, Nagoya University, and Northeastern University report in Science...
Professors Hoffman, Sachdev are at the forefront of cutting-edge research on high-energy supercon
Dr. Dalla Torre was awarded the Alon Fellowship for young faculty members by the Israeli Council for Higher Education. He is currently a post-doctorate fellow at the Department of Physics, in the group of Prof. Eugene Demler, and an ITAMP fellow. Next year Dr. Dalla Torre is...
Congratulations to Professor Subir Sachdev for being elected a member of the National Academy of Sciences!
Professor Eric Mazur has published a groundbreaking, modern introductory physics textbook that builds up physics from conservation principles: Principles & Practice of Physics (Pearson, 2014)...
Quantum optical switches are important elements of quantum circuits and quantum networks, analogous to transistors in classical electronic circuits. Operated at the fundamental limit where a single quantum of light or matter controls another field or material system...
New MRI technique provides subnanometre spatial resolution in three dimensions, with single electron-spin sensitivity...
Colloquium (Apr 28): "The spin glass cornucopia"
Lecture I (Apr 29): "Phase transitions in hard computer science problems"
Lecture II (Apr 30): "Occam’s razor in massive data acquisition: a statistical physics approach"
Lecture I (Apr 29): "Phase transitions in hard computer science problems"
Lecture II (Apr 30): "Occam’s razor in massive data acquisition: a statistical physics approach"
On Saturday, April 26, the annual Engineering and Physical Biology (EPB) Symposium brought together scholars from constituent fields - Physics, Engineering, Chemistry and Molecular Biology - who presented significant recent findings ranging from the physics of protein conformation to DNA knotting.
Past studies have identifed a spatially extended excess of 1-3 GeV gamma rays from the region surrounding the Galactic Center, consistent with the emission expected from annihilating dark matter. Harvard Physics grad student Tansu Daylan, Prof. Douglas Finkbeiner, and...
Ultracold atoms offer a fascinating view of the quantum world. With the quantum gas microscope, invented here at Harvard, we take pictures of individual atoms dancing to the rules of quantum mechanics...
François Englert, "The Brout-Englert-Higgs Mechanism And Its Scalar Bosons"
Recent neutron scattering experiments on the spin-1/2 kagome lattice antiferromagnet ZnCu3(OH)6Cl2 (Herbertsmithite) provide the first evidence of fractionalized excitations in a quantum spin liquid state in two spatial dimensions. In contrast to existing theoretical models of both gapped and gapless spin liquids, which give rise...
The hole-doped cuprate high-temperature superconductors enter the pseudogap regime as their superconducting critical temperature, Tc, falls with decreasing hole density. Recent x-ray scattering experiments in YBa2Cu3O6+x observe incommensurate charge-density wave fluctuations whose strength rises gradually over a wide...
Graduate students Prahar Mitra, Elliot Schneider, Elizabeth Petrik, Nicholas Schade, Alexandru Lu
The BICEP2 Collaboration, led by Professor John Kovac, has announced the discovery of first direct evidence of cosmic inflation, the expansion of space first proposed in 1981 by Alan Guth of MIT. Watch the VIDEO.
Harvard has been chosen one of the six recipients of Gordon and Betty Mooore Foundation's Emergent Phenomena in Quantum Systems (EPiQS) grants...
Professors Lisa Randall and Matthew Reece suggest that a smooth disc of dark matter passing through the Galaxy approximately every 35 million years might be the underlying cause of the cycles of increased meteorite activity on Earth, such as the one that led to the extinction of the dinosaurs...
The Society... was established in 1752 by seven distinguished burghers of the city of Haarlem, in the then Republic of the United Provinces of the Netherlands, in order "to promote science" (in the broadest sense, including the "arts")
The understanding of the origin of superconductivity in cuprates has been hindered by the apparent diversity of intertwining electronic orders in these materials...
The genome revolution has created unprecedented opportunities to study human biology, evolution, and disease, and is making it possible to carry out unprecedented studies in the microbial pathogens that affect humans....
Although the effects of kinetics on crystal growth are well understood, the role of substrate curvature is not yet established...
Electrical signaling plays a fundamental role in biology: our neurons communicate with little electrical blips, our heart is paced by an electrical wave, and every cell in our body powers part of its metabolism from electrical energy in mitochondria...
Prof. Subir Sachdev delivered the 2014 Salam Distinguished Lecture titled "Theory of Quantum Matter: from Quantum Fields to Strings" at the Abdus Salam International Center for Theoretical Physics.
This year's Oliver E. Buckley Condensed Matter Prize has been awarded to Prof. Philip Kim "for his discoveries of unconventional electronic properties of graphene".
Colloidal crystals are promising structures for photonic applications requiring dynamic control over optical properties...
From the Publisher's Summary: "Providing a comprehensive introduction to quantum field theory, this textbook covers the development of particle physics from its foundations to the discovery of the Higgs boson..."
The physical properties of our planet are intricately tied to the sequence of giant impact events that led to the formation of the Moon. The canonical giant impact model for lunar origin has been called into question by recent geochemical measurements of lunar rocks...
The Standard Model (SM) of particle physics fails to explain dark matter and why matter survived annihilation with antimatter following the Big Bang. Extensions to the SM, such as weak-scale Supersymmetry, may explain one or both of these phenomena by positing the existence of new particles and interactions that are asymmetric under time-reversal (T)...
In 1893, Max Planck, newly appointed professor of physics in Berlin, was seconded to study the department’s Eitz harmonium, capable of dividing an octave into 104 steps. An accomplished musician, Planck learned to play this new instrument and used it to devise experiments in musical temperament...
Geometric phases that characterize the topological properties of Bloch bands play a fundamental role in the band theory of solids...
Super-luminous supernovae that radiate more than 1044 ergs per second at their peak luminosity have recently been discovered in faint galaxies at redshifts of 0.1–4. Some evolve slowly, resembling models of 'pair-instability' supernovae...
Professors Andrew Strominger and Cumrun Vafa have been awarded the Physics Frontiers Prize by the Fundamental Physics Prize Committee.
What counts as evidence?
Is there a gold standard?
What makes some evidence better than other kinds?
Do different scientific disciplines answer these questions differently?
Graphene provides a rich platform to study many-body effects, owing to its massless chiral charge carriers and the fourfold degeneracy arising from their spin and valley degrees of freedom. Graduate student Ben Feldman, Prof. Amir Yacoby, and colleagues from Max-Planck-Institut...
The National Science Foundation has awarded a major grant to researchers from Harvard University, Howard University, Massachusetts Institute of Technology, and the Boston Museum of Science to create a Science and Technology Center on Integrated Quantum Materials...
Schedule:
8:00am - 9:00am: Poster set up (Physics Research Library)
9:00am - 11:00am: Talks (Jefferson 250)
11:00am - 2:30pm: Poster Session (Physics Research Library)
8:00am - 9:00am: Poster set up (Physics Research Library)
9:00am - 11:00am: Talks (Jefferson 250)
11:00am - 2:30pm: Poster Session (Physics Research Library)
On September 30, 2013, University of Maryland Professor of Physics Edward "Joe" Redish was the guest speaker at the Harvard Monday Physics Colloquium dedicated to the science of teaching and learning physics...
The fundamental properties of light derive from its constituent particles - massless quanta (photons) that do not interact with one another. However, it has long been known that the realization of coherent interactions between individual photons...
WHEN: Friday, October 18, 2013, 8:30 a.m. – 8:00 p.m.
WHERE: Mass. General Hospital Institute for Neurodegenerative Disease (MIND) (Building114), 114 16th St., Charlestown Naval Shipyard...
Just three years ago the prospect of finding temperate, rocky worlds around other stars was still the subject of science fiction: none had been found and reasonable estimates put us years or decades away from such a momentous discovery...
With great sadness that we announce that Doctor George Brandenburg, ex-director of the LPPC, passed away on Saturday.
An international group of researchers, including Professor L. Mahadevan, has developed a quantitative computational model for the development of villi in the gut of humans and other species.
The ATLAS Standard Model group workshop will be held in Harvard, 19-21 September, 2013. The first day of the workshop is an open session with invited theory talks. The second and the third days are for ATLAS internal discussions.
This workshop is dedicated to the memory Adilet Imambekov (1981-2012).
Participants include Lev Ioffe (Rutgers), Jun Kono (Rice), Matteo Rizzi (Mainz), Alexei Tsvelik (Brookhaven), Vladimir Gritsev (Fribourg)...
Schedule of Events:
9:00 – 10:00 am Breakfast in the G1 area (and G1 desk assignments)
10:00 – 11:30 am Orientation in Jefferson 356...
Researchers from Harvard, MIT, and the City University of Hong Kong, led by Professors Mikhail Lukin and Hongkun Park, developed a new approach for nanoscale temperature control inside a living cell...
A team of MIT, Harvard, and the Vienna University of Technology scientists built an all-optical transistor. Using ultracold atoms researchers were able to demonstrate that a single gate photon can control the transmission of hundreds of signal photons...
Prof. Melissa Franklin lead a group of physics students in building a small boat, from raw materials to its successful launch on Charles River...
Monday, June 10 • Northwest Building, B101, 52 Oxford Street
9:00 Jeremy England, Asst. Professor of Physics, MIT, "A game of musical chairs: the simple physics of protein conformational change"
November PhDs: Colin Connolly, Garry Goldstein, Douglas Mason, Adam Pivonka, Yihua Wang, Pavel Petrov, Zachary Wissner-Gross
March PhDs: Antonio Copete, Jieping Fang, Yiqiao Tang
May PhDs: Tarek Anous, Luke Bruneaux, Hwan Sung Choe...
"After the U.S. entered World War II, things changed on Harvard’s campus. All but two of the Houses filled with military personnel, and faculty members left to take up posts supporting the war effort..."
Each year, the undergraduate members of Alpha Iota, the Harvard College chapter of the Phi Beta Kappa Soclety, award Excellence in Teaching Prize to three members of the Faculty of Arts and Sciences...
60 students who participated in Prof. Eric Heller's "Why You Hear What You Hear: The Science of Music and Sound" class (SPU13) presented their demos of original sound/music-related projects.
Long before GPS, Google Earth, and global transit, humans traveled vast distances using only environmental clues and simple instruments. John Huth asks what is lost when modern technology substitutes...
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