"From Hot Superconductors to Cold Atoms: Quantum Matter with Strong Correlations"

Mon, 02/12/2018 - 4:15pm
428 Pupin Hall

Antoine Georges

Center for Computational Quantum Physics Flatiron Institute - Simons Foundation, New York
Collège de France, Paris

"From Hot Superconductors to Cold Atoms: Quantum Matter with Strong Correlations"

Materials with strong electronic correlations such as transition-metal oxides, rare-earth compounds or molecular conductors have focused enormous attention over the last three decades. Solid-state chemistry is constantly providing us with examples of novel materials with surprising and remarkable electronic properties. New routes for controlling the functionalities of these materials are actively being explored, such as high-quality heterostructures and selective control of structural modes with ultra-fast light pulses. 

New frontiers are also opening up, which bring together condensed-matter physics and quantum optics. `Artificial materials' made of ultra-cold atoms trapped by laser beams can be engineered with a remarkable level of controllability, and allow for the study of strong-correlation physics in previously unexplored regimes.

After an overview of some aspects of this broad field, I will argue that the `standard model’ of condensed-matter physics, which views electrons in a solid as a gas of wave-like quasiparticles, must be seriously reconsidered for strongly correlated materials.  I will also outline some of the theoretical and computational challenges raised by quantum matter with strong correlations.


About the speaker

Antoine Georges is a professor of physics at the Collège de France, where he holds the chair in condensed matter physics. He also has joint appointments with École Polytechnique and the University of Geneva. He received his Ph.D. from the École Normale Supérieure in 1988. His early research concerned the statistical mechanics of disordered systems, but his main focus has been on the physics of quantum materials with strong electron-electron interactions. These materials possess remarkable electronic properties and functionalities. Georges is one of the inventors of dynamical mean field theory, for which he shared the 2006 Europhysics Prize. This theory has deeply transformed our understanding of these materials and our ability to explain, calculate and predict their physical properties. In recent years, Georges has made contributions linking condensed matter physics and quantum optics and has also contributed to the field of ultra-cold atomic gases. Georges received the 2007 Silver Medal from the National Center for Scientific Research (CNRS) and was awarded a Synergy grant from the European Research Council.