Variational cluster approach to correlated electron systems in low dimensions

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dc.creatorPotthoff, M.
dc.creatorAichhorn, M.
dc.creatorDahnken, C.
dc.date2003-03-07
dc.date2003-11-20
dc.date.accessioned2026-07-07T02:50:04Z
dc.date.available2026-07-07T02:50:04Z
dc.descriptionA self-energy-functional approach is applied to construct cluster approximations for correlated lattice models. It turns out that the cluster-perturbation theory (Senechal et al, PRL 84, 522 (2000)) and the cellular dynamical mean-field theory (Kotliar et al, PRL 87, 186401 (2001)) are limiting cases of a more general cluster method. Results for the one-dimensional Hubbard model are discussed with regard to boundary conditions, bath degrees of freedom and cluster size.
dc.description4 pages, final version with minor changes
dc.identifierhttps://arxiv.org/abs/cond-mat/0303136
dc.identifierhttp://arxiv.org/abs/cond-mat/0303136
dc.identifierPhys. Rev. Lett. 91, 206402 (2003)
dc.identifierdoi:10.1103/PhysRevLett.91.206402
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/20988
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleVariational cluster approach to correlated electron systems in low dimensions
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