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Type: Artigo de periódico
Title: Cumulant expansion of the periodic Anderson model in infinite dimensions
Author: Foglio, ME
Figueira, MS
Abstract: The diagrammatic cumulant expansion for the periodic Anderson model with infinite Coulomb repulsion (U = infinity) is considered here for an hypercubic lattice of infinite dimension (d = infinity). The nearest neighbour hopping of the uncorrelated electrons is described exactly by a conduction band, while two different models of hybridization are treated as a perturbation. The same type of simplifications obtained by Metzner for the cumulant expansion of the Hubbard model in the limit of d = infinity, are also shown to be valid for the periodic Anderson model. The derivation of these properties had to be modified because of the exact treatment of the conduction band.
Country: Inglaterra
Editor: Iop Publishing Ltd
Rights: fechado
Identifier DOI: 10.1088/0305-4470/30/22/024
Date Issue: 1997
Appears in Collections:Unicamp - Artigos e Outros Documentos

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