Nonequilibrium functional renormalization group for interacting quantum systems
Mesoscale and Nanoscale Physics
2011-11-09 v2 Strongly Correlated Electrons
Abstract
We propose a nonequilibrium version of functional renormalization within the Keldysh formalism by introducing a complex valued flow parameter in the Fermi or Bose functions of each reservoir. Our cutoff scheme provides a unified approach to equilibrium and nonequilibrium situations. We apply it to nonequilibrium transport through an interacting quantum wire coupled to two reservoirs and show that the nonequilibrium occupation induces new power law exponents for the conductance.
Cite
@article{arxiv.cond-mat/0702494,
title = {Nonequilibrium functional renormalization group for interacting quantum systems},
author = {Severin G. Jakobs and Volker Meden and Herbert Schoeller},
journal= {arXiv preprint arXiv:cond-mat/0702494},
year = {2011}
}
Comments
5 pages, 2 figures; published version