%0 Journal Article %T Impurity model for non-equilibrium steady states %A Camille Aron %A Cedric Weber %A Gabriel Kotliar %J Physics %D 2012 %I arXiv %R 10.1103/PhysRevB.87.125113 %X 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. %U http://arxiv.org/abs/1210.4926v2