Real-time Kadanoff-Baym approach to plasma oscillations in a correlated electron gas

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dc.creatorKwong, N. -H.
dc.creatorBonitz, M.
dc.date1999-12-03
dc.date.accessioned2026-07-07T12:39:58Z
dc.date.available2026-07-07T12:39:58Z
dc.descriptionA nonequilibrium Green's functions approach to the collective response of correlated Coulomb systems at finite temperature is presented. It is shown that solving Kadanoff-Baym type equations of motion for the two-time correlation functions with the external perturbing field included allows to compute the plasmon spectrum with collision effects in a systematic and consistent way. The scheme has ``built-in'' sum rule preservation and is simpler to implement numerically than the equivalent equilibrium approach based on the Bethe-Salpeter equation.
dc.description4 pages two-column RevTeX, 6 figures including 4 diagrams included in text, submitted to Phys. Rev. Lett
dc.identifierhttps://arxiv.org/abs/cond-mat/9912053
dc.identifierhttp://arxiv.org/abs/cond-mat/9912053
dc.identifierPhys.Rev.Lett.84:1768-1771,2000
dc.identifierdoi:10.1103/PhysRevLett.84.1768
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/219306
dc.subjectStrongly Correlated Electrons
dc.subjectStatistical Mechanics
dc.titleReal-time Kadanoff-Baym approach to plasma oscillations in a correlated electron gas
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