Correlation functions for composite operators in the Hubbard model

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dc.creatorBaier, Tobias
dc.creatorBick, Eike
dc.creatorWetterich, Christof
dc.date2001-07-18
dc.date.accessioned2026-07-07T02:42:13Z
dc.date.available2026-07-07T02:42:13Z
dc.descriptionWe compute the correlation functions for antiferromagnetic and d-wave superconducting fermion bilinears in a generalized mean field type approximation for the Hubbard model. For high temperature our explicit expressions show that homogeneous field configurations are preferred for these composite bosons. Below a critical temperature we find spontaneous symmetry breaking with homogeneous expectation values of the composite fields. Our results can be used to device a nonperturbative flow equation for the exploration of the low temperature regime.
dc.description29 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0107390
dc.identifierhttp://arxiv.org/abs/cond-mat/0107390
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/18049
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.subjectHigh Energy Physics - Theory
dc.titleCorrelation functions for composite operators in the Hubbard model
dc.typetext

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