Impurity model for non-equilibrium steady states

Abstract

We propose an out-of-equilibrium impurity model for the dynamical mean-field description of the Hubbard model driven by a finite electric field. The out-of-equilibrium impurity environment is represented by a collection of equilibrium reservoirs at different chemical potentials. We discuss the validity of the impurity model and propose a non-perturbative method, based on a quantum Monte Carlo solver, which provides the steady-state solutions of the impurity and original lattice problems. We discuss the relevance of this approach to other non-equilibrium steady-state contexts.

5 pages, 4 figures

References in corpus (6)

• On steady-state currents through nano-devices: a scattering-states numerical renormalization group approach to open quantum systems
• Correlated electron systems periodically driven out of equilibrium: Floquet + DMFT formalism
• Nonequilibrium Steady State of Photoexcited Correlated Electrons in the Presence of Dissipation
• Imaginary-time formulation of steady-state nonequilibrium: application to strongly correlated transport
• Steady-state nonequilibrium density of states of driven strongly correlated lattice models in infinite dimensions
• Theory of Non-Equilibirum States Driven by Constant Electromagnetic Fields: Non-Commutative Quantum Mechanics in the Keldysh Formalism