Nonequilibrium sum rules for the retarded self-energy of strongly correlated electrons

Simple item page
dc.creatorTurkowski, V.
dc.creatorFreericks, J. K.
dc.date2008-01-10
dc.date.accessioned2026-07-07T09:56:18Z
dc.date.available2026-07-07T09:56:18Z
dc.descriptionWe derive the first two moment sum rules of the conduction electron retarded self-energy for both the Falicov-Kimball model and the Hubbard model coupled to an external spatially uniform and time-dependent electric field (this derivation also extends the known nonequilibrium moment sum rules for the Green's functions to the third moment). These sum rules are used to further test the accuracy of nonequilibrium solutions to the many-body problem; for example, we illustrate how well the self-energy sum rules are satisfied for the Falicov-Kimball model in infinite dimensions and placed in a uniform electric field turned on at time t=0. In general, the self-energy sum rules are satisfied to a significantly higher accuracy than the Green's functions sum rules.
dc.identifierhttps://arxiv.org/abs/0801.1638
dc.identifierhttp://arxiv.org/abs/0801.1638
dc.identifierPhys. Rev. B 77, 205102-1--16 (2008)
dc.identifierdoi:10.1103/PhysRevB.77.205102
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/166932
dc.subjectStrongly Correlated Electrons
dc.subjectStatistical Mechanics
dc.titleNonequilibrium sum rules for the retarded self-energy of strongly correlated electrons
dc.typetext

Files

Collections

arXiv