Hubbard model in high dimensions: A pert
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Walter Metzner
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Article
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1990
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Elsevier Science
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English
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We discuss a perturbation expansion about the atomic limit of the Hubbard model, i.e. the inter-atomic hopping of electrons is treated as a perturbation. Diagrammatic rules for the calculation of the Green's function of the d-dimensional Hubbard model are described. In the limit of high lattice dime