Tight-binding treatment of the Hubband model in infinite dimensions

dc.contributor.author	Craco, Luis	pt_BR
dc.contributor.author	Gusmao, Miguel Angelo Cavalheiro	pt_BR
dc.date.accessioned	2014-10-07T02:11:19Z	pt_BR
dc.date.issued	1996	pt_BR
dc.identifier.issn	0163-1829	pt_BR
dc.identifier.uri	http://hdl.handle.net/10183/104210	pt_BR
dc.description.abstract	We discuss the infinite dimension limit of the Hubbard model by means of a perturbative expansion of the one-particle Green’s function around the atomic limit. The diagrammatic structure is simplified in this limit, allowing a formal resummation that reproduces a previously proposed mapping to a single-site mean-field problem. The method provides a natural way of addressing this effective problem by means of a perturbative expansion in the local mean field. This gives the correct exact result for the Falicov-Kimball model, which is used as a starting point to study the Hubbard case.	en
dc.format.mimetype	application/pdf
dc.language.iso	eng	pt_BR
dc.relation.ispartof	Physical review. B, Condensed matter. New York. Vol. 54, n. 3 (July 1996), p. 1629-1636	pt_BR
dc.rights	Open Access	en
dc.subject	Física da matéria condensada	pt_BR
dc.subject	Modelo de hubbard	pt_BR
dc.subject	Teoria de perturbacao	pt_BR
dc.subject	Sistemas de férmions	pt_BR
dc.title	Tight-binding treatment of the Hubband model in infinite dimensions	pt_BR
dc.type	Artigo de periódico	pt_BR
dc.identifier.nrb	000148846	pt_BR
dc.type.origin	Estrangeiro	pt_BR

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