TY  - JOUR
AU  - Muñoz, Enrique
AU  - Zamani, Farzaneh
AU  - Merker, Lukas
AU  - Costi, Theodoulos
AU  - Kirchner, Stefan
TI  - The renormalized superperturbation theory (rSPT) approach to the Anderson model in and out of equilibrium
JO  - Journal of physics / Conference Series
VL  - 807
IS  - 9
SN  - 1742-6596
CY  - Bristol
PB  - IOP Publ.
M1  - FZJ-2017-05076
SP  - 092001 
PY  - 2017
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000439585900055
DO  - DOI:10.1088/1742-6596/807/9/092001
UR  - https://juser.fz-juelich.de/record/835944
ER  -