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Back into the Dark

December 17, 2014
ATLAS

The big wheel of the muon spectrometer as it is moved halfway through to its final position before the closing of the ATLAS detector. (IMAGE: Claudia Marcelloni, The ATLAS Experiment/CERN)

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Bloch Oscillations of Bosonic Lattice Polarons

December 9, 2014
Figure 1

Copyright 2014 by the American Physical Society

Figure 1: (a) An impurity (blue) is immersed in a homogeneous 3D BEC (red) and constrained to the lowest band of a 1D optical lattice. Strong interactions with the Bose gas lead to polaron formation and a modified dispersion. [From F. Grusdt, A. Shashi, D. Abanin, and E. Demler, "Bloch oscillations of bosonic lattice polarons," Phys. Rev. A 90, 063610 (4 Dec 2014), http://dx.doi.org/10.1103/PhysRevA.90.063610]

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Higgs Criticality in a Two-Dimensional Metal

December 8, 2014

FIG. 1: the proposed phase diagram for the hole-doped cuprates, building on a theory for Higgs criticality for the optimal doping QCP. The lgebraic charge liquids (ACLs) have Fermi surfaces of spinless fermions which carry the electromagnetic charge: in the SU(2) ACL the Fermi surface is 'large' and is coupled to an emergent SU(2) gauge field, while in the U(1) ACL the Fermi surface is 'small' and coupled to an emergent U(1) gauge field. The fractionalized Fermi liquid (FL*) descends from the U(1) ACL by the binding of fermions to neutral spinons.

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Professor Amir Yacoby

December 8, 2014

Prof. Amir Yacoby

Prof. Yacoby has been selected a Fellow of the American Association for the Advancement of Science (AAAS). Chosen by their peers, the Fellows are honored "for their contributions to innovation, education, and scientific leadership."

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Principles of Scientific Inquiry: Wave Phenomena 2014

December 5, 2014
PSI Presentations

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?

These are some of the questions which this year's students addressed independently in their experimental projects for "Principles of Scientific Inquiry", the lab component of Physics 15c.

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