Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session N62: Quantum Embedding: Methods and Models
11:30 AM–2:30 PM,
Wednesday, March 8, 2023
Room: Room 417
Sponsoring
Unit:
DCOMP
Chair: Cyrus Dreyer, Stony Brook University (SUNY)
Abstract: N62.00008 : An efficient method for quantum impurity models in and out of equilibrium*
1:42 PM–1:54 PM
Presenter:
Julian Thoenniss
(University of Geneva)
Authors:
Julian Thoenniss
(University of Geneva)
Alessio Lerose
(University of Geneva)
Michael Sonner
(University of Geneva)
Dmitry A Abanin
(University of Geneva)
In this talk, we use the Single-Impurity Anderson Model as testbed to demonstrate the power of the method:
In equilibrium, we illustrate that it correctly captures the emergence of Kondo physics at large time scales.
Away from equilibrium, we show that transport properties in the steady-state are accessible for a large parameter range.
Last, we expound how the theoretical framework allows for a natural application in dynamical mean-field theory algorithms.
*This work was supported by the Swiss National Science Foundation and by the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (grant agreement No. 864597).
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