Tight-binding treatment of the Hubband model in infinite dimensions

Detalhes bibliográficos
Autor(a) principal: Craco, Luis
Data de Publicação: 1996
Outros Autores: Gusmao, Miguel Angelo Cavalheiro
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/104210
Resumo: 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.
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spelling Craco, LuisGusmao, Miguel Angelo Cavalheiro2014-10-07T02:11:19Z19960163-1829http://hdl.handle.net/10183/104210000148846We 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.application/pdfengPhysical review. B, Condensed matter. New York. Vol. 54, n. 3 (July 1996), p. 1629-1636Física da matéria condensadaModelo de hubbardTeoria de perturbacaoSistemas de férmionsTight-binding treatment of the Hubband model in infinite dimensionsEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000148846.pdf000148846.pdfTexto completo (inglês)application/pdf113660http://www.lume.ufrgs.br/bitstream/10183/104210/1/000148846.pdfe3743199f0c5840dc2dec1af0650e63cMD51TEXT000148846.pdf.txt000148846.pdf.txtExtracted Texttext/plain35679http://www.lume.ufrgs.br/bitstream/10183/104210/2/000148846.pdf.txta12a77eb3bfb5b984abcb3d67056ebf9MD5210183/1042102018-06-07 02:31:49.018984oai:www.lume.ufrgs.br:10183/104210Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-06-07T05:31:49Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Tight-binding treatment of the Hubband model in infinite dimensions
title Tight-binding treatment of the Hubband model in infinite dimensions
spellingShingle Tight-binding treatment of the Hubband model in infinite dimensions
Craco, Luis
Física da matéria condensada
Modelo de hubbard
Teoria de perturbacao
Sistemas de férmions
title_short Tight-binding treatment of the Hubband model in infinite dimensions
title_full Tight-binding treatment of the Hubband model in infinite dimensions
title_fullStr Tight-binding treatment of the Hubband model in infinite dimensions
title_full_unstemmed Tight-binding treatment of the Hubband model in infinite dimensions
title_sort Tight-binding treatment of the Hubband model in infinite dimensions
author Craco, Luis
author_facet Craco, Luis
Gusmao, Miguel Angelo Cavalheiro
author_role author
author2 Gusmao, Miguel Angelo Cavalheiro
author2_role author
dc.contributor.author.fl_str_mv Craco, Luis
Gusmao, Miguel Angelo Cavalheiro
dc.subject.por.fl_str_mv Física da matéria condensada
Modelo de hubbard
Teoria de perturbacao
Sistemas de férmions
topic Física da matéria condensada
Modelo de hubbard
Teoria de perturbacao
Sistemas de férmions
description 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.
publishDate 1996
dc.date.issued.fl_str_mv 1996
dc.date.accessioned.fl_str_mv 2014-10-07T02:11:19Z
dc.type.driver.fl_str_mv Estrangeiro
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dc.identifier.issn.pt_BR.fl_str_mv 0163-1829
dc.identifier.nrb.pt_BR.fl_str_mv 000148846
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dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Physical review. B, Condensed matter. New York. Vol. 54, n. 3 (July 1996), p. 1629-1636
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