Perturbation Expansion of the Partition Sum for any Temperature

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dc.creatorSchumann, R.
dc.date1998-02-04
dc.date1998-03-12
dc.date.accessioned2026-07-07T03:09:55Z
dc.date.available2026-07-07T03:09:55Z
dc.descriptionBased on the special properties of Liouville eigenoperators a perturbation theory for the partition sum is given. It is applicable for any temperature and includes the case of degenerate Hamiltonians. To demonstrate the reliability of the method, the second order correction to the atomic limit grand canonical potential of the Hubbard model is calculated and compared to results known from the literature.
dc.description22 pages, latex, needs PSTricks-macro from Princeton University, new version with some minor corrections of mistyped formulas
dc.identifierhttps://arxiv.org/abs/cond-mat/9802051
dc.identifierhttp://arxiv.org/abs/cond-mat/9802051
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/28073
dc.subjectStrongly Correlated Electrons
dc.subjectStatistical Mechanics
dc.titlePerturbation Expansion of the Partition Sum for any Temperature
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