Nonequilibrium dynamical mean field theory

Abstract:  

Dynamical mean field theory, which maps a lattice system onto an effective impurity problem, is a versatile tool for the study of correlated electron systems. I will explain the extension of this formalism to nonequilibrium problems [1], and describe some impurity solvers, which have been used to solve the nonequilibrium DMFT equations. As a first application, I will show how AC electric field quenches can be used to control the electron-electron interaction in metals [2]. The second application is the demonstration of an η-pairing state with high effective temperature in photo-doped Mott insulators [3].