Tight-binding treatment of the Hubband model in infinite dimensions
Autor(a) principal: | |
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Data de Publicação: | 1996 |
Outros Autores: | |
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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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 info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/104210 |
dc.identifier.issn.pt_BR.fl_str_mv |
0163-1829 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000148846 |
identifier_str_mv |
0163-1829 000148846 |
url |
http://hdl.handle.net/10183/104210 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
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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info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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UFRGS |
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Repositório Institucional da UFRGS |
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Repositório Institucional da UFRGS |
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