Flatiron Institute Seminar Series: Antoine Georges

Date & Time

Title: Electronic Correlations: Beyond the Standard Model of Solid-State Physics

Abstract:  Materials in which electrons `work as a team’ in a strongly correlated manner display emergent collective behavior at the macroscopic scale, such as superconductivity, magnetism, or metal-insulator transitions. Ever larger and more diverse families of such materials are being discovered at a fast pace. The `standard model’ of solid-state physics, based on electrons occupying bands of individual energy levels, must be seriously revised for strongly correlated materials. Instead, a description accounting for both localized atomic excitations and delocalized wave-like quasiparticles is required. I will review how Dynamical Mean-Field Theory (DMFT) – and more broadly `Quantum Embedding’ methods – fulfills this goal and provides an original physical perspective on strongly correlated electron materials. Thanks to the contributions of a large community over almost three decades, the theory now provides a practical framework to understand and predict the properties of quantum materials starting from their structure and chemical composition. I will finally discuss current limitations and what is being done, particularly at CCQ, to overcome them and extend the scope of quantum embedding approaches.

Advancing Research in Basic Science and MathematicsSubscribe to Flatiron Institute announcements and other foundation updates