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@INPROCEEDINGS{Saptsov:127157,
author = {Saptsov, Roman and Wegewijs, Maarten Rolf},
title = {{Z}ero-temperature non-linear quantum transport through
quantum dots: real-time renormalization-group ({RT}-{RG})
calculation of d{I}/d{V} stability diagrams},
reportid = {FZJ-2012-00222},
year = {2012},
abstract = {The recently developed RT-RG approach was applied to study
the non-linear transport through a quantum dot described by
the Anderson impurity model. The RT-RG equations were solved
numerically including both 1- and 2- loop orders in the
limit of zero temperature and non-linear transport voltages
where most standard theoretical methods break down. We
predict non-perturbative tunneling effects in the transport
stability diagram which can be measured experimentally.
Moreover, we found the exact functional form of the
renormalized spectra of the dot at any loop order. In the
non-interacting case we show that the RT-RG recovers the
exact solution within our 2 loop approach. In the
strong-interacting limit the method breaks down as expected
only at very small voltages on the order of the Kondo
temperature, which we illustrate by comparison with the
Friedel sum rule.},
month = {Mar},
date = {2012-03-25},
organization = {76 Annual DPG-Tagung of the Condensed
Matter Division, Berlin (Germany), 25
Mar 2012 - 30 Mar 2012},
subtyp = {Other},
cin = {PGI-2},
cid = {I:(DE-Juel1)PGI-2-20110106},
pnm = {422 - Spin-based and quantum information (POF2-422)},
pid = {G:(DE-HGF)POF2-422},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/127157},
}