Stability Analysis of the Hubbard-Model

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dc.creatorGrote, I.
dc.creatorKoerding, E.
dc.creatorWegner, F.
dc.date2001-06-28
dc.date.accessioned2026-07-07T02:41:56Z
dc.date.available2026-07-07T02:41:56Z
dc.descriptionAn effective Hartree-Fock-Bogoliubov-type interaction is calculated for the Hubbard-model in second order in the coupling by means of flow-equations. A stability analysis is performed in order to obtain the transition into various possible phases. We find, that the second order contribution weakens the tendency for the antiferromagnetic transition. Apart from a possible antiferromagnetic transition the d-wave Pomeranchuk instability recently reported by Halboth and Metzner is usually the strongest instability. A newly found instability is of p-wave character and yields a band-splitting. In the BCS-channel one obtains the strongest contribution for $d_{x^2-y^2}$-waves. Other types of instabilities of comparable strength are also reported.
dc.description25 pages, Latex2e, 4 figures and 1 table as ps-file, submission to Journal of Low Temperature Physics
dc.identifierhttps://arxiv.org/abs/cond-mat/0106604
dc.identifierhttp://arxiv.org/abs/cond-mat/0106604
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/17943
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleStability Analysis of the Hubbard-Model
dc.typetext

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