Nonequilibrium dynamical mean-field theory of a strongly correlated system

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dc.creatorSchmidt, P.
dc.creatorMonien, H.
dc.date2002-02-04
dc.date.accessioned2026-07-07T02:44:20Z
dc.date.available2026-07-07T02:44:20Z
dc.descriptionWe present a generalized dynamical mean-field approach for the nonequilibrium physics of a strongly correlated system in the presence of a time-dependent external field. The Keldysh Green's function formalism is used to study the nonequilibrium problem. We derive a closed set of self-consistency equations in the case of a driving field with frequency Omega and wave vector q. We present numerical results for the local frequency-dependent Green's function and the self-energy for different values of the field amplitude in the case of a uniform external field using the iterated perturbation theory. In addition, an expression for the frequency-dependent optical conductivity of the Hubbard model with a driving external field is derived.
dc.description4 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0202046
dc.identifierhttp://arxiv.org/abs/cond-mat/0202046
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/18877
dc.subjectStrongly Correlated Electrons
dc.titleNonequilibrium dynamical mean-field theory of a strongly correlated system
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