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Integrability of the diffusion pole in the diagrammatic description of noninteracting electrons in a random potential

SYSNO ASEP	0331721
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Integrability of the diffusion pole in the diagrammatic description of noninteracting electrons in a random potential
Title	Integrabilita difusního pólu v diagramatickém popisu neinteragujících elektronů v náhodném potenciálu
Author(s)	Janiš, Václav (FZU-D)_{RID, ORCID, SAI}
Number of authors	1
Source Title	Journal of Physics-Condensed Matter. - : Institute of Physics Publishing - ISSN 0953-8984 Roč. 21, č. 48 (2009), 485501/1-485501/8
Number of pages	8 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	diffusion pole ; Bethe-Salpeter equations ; parquet equations ; electron-hole symmetry
Subject RIV	BE - Theoretical Physics
R&D Projects	GA202/07/0644 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z10100520 - FZU-D (2005-2011)
UT WOS	000271662800014
DOI	10.1088/0953-8984/21/48/485501
Annotation	We analyze Bethe-Salpeter equations for the two-particle vertex in the electron-electron and electron-hole channels and demonstrate that the low-energy singularity in two-particle functions (diffusion pole) can exist only if it is integrable. Consequently, there is no such a singularity in the localized phase.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2010

Number of the records: 1