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|Type:||Artigo de periódico|
|Title:||Cumulant expansion of the periodic Anderson model in infinite dimensions|
|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.|
|Editor:||Iop Publishing Ltd|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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