%0 Journal Article
%T Iterative path integral summation for nonequilibrium quantum transport
%A S. Weiss
%A R. H¨štzen
%A D. Becker
%A J. Eckel
%A R. Egger
%A M. Thorwart
%J Physics
%D 2013
%I arXiv
%R 10.1002/pssb.201349187
%X We have developed a numerically exact approach to compute real-time path integral expressions for quantum transport problems out of equilibrium. The scheme is based on a deterministic iterative summation of the path integral (ISPI) for the generating function of nonequilibrium observables of interest, e.g., the charge current or dynamical quantities of the central part. Self-energies due to the leads, being nonlocal in time, are fully taken into account within a finite memory time, thereby including non-Markovian effects. Numerical results are extra-polated first to vanishing (Trotter) time discretization and, second, to infinite memory time...
%U http://arxiv.org/abs/1304.6919v1