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Multiorbital simplified parquet equations for strongly correlated electrons

SYSNO ASEP	0361328
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Multiorbital simplified parquet equations for strongly correlated electrons
Author(s)	Augustinský, Pavel (FZU-D)_RID Janiš, Václav (FZU-D)_{RID, ORCID, SAI}
Source Title	Physical Review. B - ISSN 1098-0121 Roč. 83, č. 3 (2011), "035114-1"-"035114-13"
Number of pages	13 s.
Language	eng - English
Country	US - United States
Keywords	multi-orbital model ; strongly correlated electrons ; parquet equations ; Kondo regime
Subject RIV	BE - Theoretical Physics
R&D Projects	GC202/07/J047 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z10100520 - FZU-D (2005-2011)
UT WOS	000286767800002
DOI	10.1103/PhysRevB.83.035114
Annotation	We extend an approximation that we developed earlier for the single-impurity Anderson model to a full-size impurity solver for models of interacting electrons with multiple orbitals. The approximation is based on parquet equations simplified by separating small and large energy fluctuations justified in the critical region of a pole in the two-particle vertex. We explicitly calculate properties of a paramagnetic solution of a two-orbital Hubbard model with a Hund exchange and orbital splitting within the dynamical mean-field approximation.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2012

Number of the records: 1