Nonequilibrium many-body physics: From impurity models to quantum phase transitions

Andrew Millis

Columbia University, New York, USA


Developments over the past decades in nanoscience raise the issue of the proper theoretical description of the steady state behavior of an interacting quantum mechanical system driven out of equilibrium by a current flow. After a brief review of some of the relevant phenomena, a theoretical formalism will be presented and applied to the nonequilibrium Anderson model (quantum dot)and to current-driven quantum phase transitions. Recent results on numerical computations will also be presented and discussed.

Back