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...
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...