About: Vertices for correlated electron systems with anomalous propagators

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We study effects of electron correlations in the equilibrium state with condensed singlet Cooper pairs. Anomalous propagation of elementary excitations emerges due to dynamical creation and annihilation of Cooper pairs. We use the Nambu matrix representation for the one and two-particle propagators. We analyze in detail two-particle vertex functions and show how multiple electron-hole and electron-electron scatterings can be represented via matrix Bethe-Salpeter equations. We find the corresponding Schwinger-Dyson equations determining the self-energy from the two-particle vertex in each of these scattering channels. We explicitly perform the analysis for a single impurity attached to a superconductor. Explicit analytic formulas for single-channel approximations are found for this model. We study effects of electron correlations in the equilibrium state with condensed singlet Cooper pairs. Anomalous propagation of elementary excitations emerges due to dynamical creation and annihilation of Cooper pairs. We use the Nambu matrix representation for the one and two-particle propagators. We analyze in detail two-particle vertex functions and show how multiple electron-hole and electron-electron scatterings can be represented via matrix Bethe-Salpeter equations. We find the corresponding Schwinger-Dyson equations determining the self-energy from the two-particle vertex in each of these scattering channels. We explicitly perform the analysis for a single impurity attached to a superconductor. Explicit analytic formulas for single-channel approximations are found for this model. (en)
Title	Vertices for correlated electron systems with anomalous propagators Vertices for correlated electron systems with anomalous propagators (en)
skos:prefLabel	Vertices for correlated electron systems with anomalous propagators Vertices for correlated electron systems with anomalous propagators (en)
skos:notation	RIV/68378271:_____/14:00439113!RIV15-GA0-68378271
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GCP204/11/J042)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Janiš, Václav Pokorný, Vladislav
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Fyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	53291
http://linked.open...ai/riv/idVysledku	RIV/68378271:_____/14:00439113
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	interacting quantum dot; superconducting leads; diagrammatic perturbation expansion; anomalous vertex functions (en)
http://linked.open.../riv/klicoveSlovo	anomalous vertex functions diagrammatic perturbation expansion interacting quantum dot superconducting leads
http://linked.open...odStatuVydavatele	IN - Indická republika
http://linked.open...ontrolniKodProRIV	[BA095432BC77]
http://linked.open...i/riv/nazevZdroje	ScienceJet
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Supercurrent and ac-Josephson effect in unconventional nanoscopic junctions
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	3
http://linked.open...iv/tvurceVysledku	Janiš, Václav Pokorný, Vladislav
issn	2278-3393
number of pages	10 (xsd:int)

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