%0 Journal Article
%A Muñoz, Enrique
%A Zamani, Farzaneh
%A Merker, Lukas
%A Costi, Theodoulos
%A Kirchner, Stefan
%T The renormalized superperturbation theory (rSPT) approach to the Anderson model in and out of equilibrium
%J Journal of physics / Conference Series
%V 807
%N 9
%@ 1742-6596
%C Bristol
%I IOP Publ.
%M FZJ-2017-05076
%P 092001 
%D 2017
%X The properties of current-carrying steady states of strongly correlated systems away from the linear-response regime are of topical interest. In this article, we review the renormalized perturbation theory, or renormalized SPT of reference [1] for the Anderson model. We present an extension to higher orders and compare the higher-order results with NRG calculations. Finally, we elucidate the role of Ward identities in calculating out-of-equilibrium properties and address claims made in the literature.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000439585900055
%R 10.1088/1742-6596/807/9/092001
%U https://juser.fz-juelich.de/record/835944