Effective action for strongly correlated electron systems

Detalhes bibliográficos
Autor(a) principal: Ferraz Filho, Álvaro
Data de Publicação: 2011
Outros Autores: Kochetov, E. A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRN
Texto Completo: https://repositorio.ufrn.br/jspui/handle/123456789/29060
Resumo: The su(2|1) coherent-state path-integral representation of the partition function of the t–J model of strongly correlated electrons is derived at finite doping. The emergent effective action is compared to the one proposed earlier on phenomenological grounds by Shankar to describe holes in an antiferromagnet [R. Shankar, Nucl. Phys. B 330 (1990) 433]. The t–J model effective action is found to have an important “extra” factor with no analogue in Shankar’s action. It represents the local constraint of no double electron occupancy and reflects the rearrangement of the underlying phase-space manifold due to the presence of strong electron correlation. This important ingredient is shown to be essential to describe the physics of strongly correlated electron systems.
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spelling Ferraz Filho, ÁlvaroKochetov, E. A.2020-05-26T00:54:19Z2020-05-26T00:54:19Z2011-12-21FERRAZ FILHO, Alvaro; KOCHETOV, E. A. Effective action for strongly correlated electron systems. Nuclear Physics B, [s. l.], v. 853, n. 3, p. 710-738, dez. 2011. ISSN 0550-3213. DOI http://dx.doi.org/10.1016/j.nuclphysb.2011.08.011. Disponível em: https://www.sciencedirect.com/science/article/pii/S0550321311004445?via%3Dihub. Acesso em:25 maio 2020.0550-3213 (online)https://repositorio.ufrn.br/jspui/handle/123456789/2906010.1016/j.nuclphysb.2011.08.011ElsevierAttribution 3.0 Brazilhttp://creativecommons.org/licenses/by/3.0/br/info:eu-repo/semantics/openAccesst–J model of strongly correlated electronssu(2|1) coherent-state path integralEffective action for strongly correlated electron systemsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleThe su(2|1) coherent-state path-integral representation of the partition function of the t–J model of strongly correlated electrons is derived at finite doping. The emergent effective action is compared to the one proposed earlier on phenomenological grounds by Shankar to describe holes in an antiferromagnet [R. Shankar, Nucl. Phys. B 330 (1990) 433]. The t–J model effective action is found to have an important “extra” factor with no analogue in Shankar’s action. It represents the local constraint of no double electron occupancy and reflects the rearrangement of the underlying phase-space manifold due to the presence of strong electron correlation. 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dc.title.pt_BR.fl_str_mv Effective action for strongly correlated electron systems
title Effective action for strongly correlated electron systems
spellingShingle Effective action for strongly correlated electron systems
Ferraz Filho, Álvaro
t–J model of strongly correlated electrons
su(2|1) coherent-state path integral
title_short Effective action for strongly correlated electron systems
title_full Effective action for strongly correlated electron systems
title_fullStr Effective action for strongly correlated electron systems
title_full_unstemmed Effective action for strongly correlated electron systems
title_sort Effective action for strongly correlated electron systems
author Ferraz Filho, Álvaro
author_facet Ferraz Filho, Álvaro
Kochetov, E. A.
author_role author
author2 Kochetov, E. A.
author2_role author
dc.contributor.author.fl_str_mv Ferraz Filho, Álvaro
Kochetov, E. A.
dc.subject.por.fl_str_mv t–J model of strongly correlated electrons
su(2|1) coherent-state path integral
topic t–J model of strongly correlated electrons
su(2|1) coherent-state path integral
description The su(2|1) coherent-state path-integral representation of the partition function of the t–J model of strongly correlated electrons is derived at finite doping. The emergent effective action is compared to the one proposed earlier on phenomenological grounds by Shankar to describe holes in an antiferromagnet [R. Shankar, Nucl. Phys. B 330 (1990) 433]. The t–J model effective action is found to have an important “extra” factor with no analogue in Shankar’s action. It represents the local constraint of no double electron occupancy and reflects the rearrangement of the underlying phase-space manifold due to the presence of strong electron correlation. This important ingredient is shown to be essential to describe the physics of strongly correlated electron systems.
publishDate 2011
dc.date.issued.fl_str_mv 2011-12-21
dc.date.accessioned.fl_str_mv 2020-05-26T00:54:19Z
dc.date.available.fl_str_mv 2020-05-26T00:54:19Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.citation.fl_str_mv FERRAZ FILHO, Alvaro; KOCHETOV, E. A. Effective action for strongly correlated electron systems. Nuclear Physics B, [s. l.], v. 853, n. 3, p. 710-738, dez. 2011. ISSN 0550-3213. DOI http://dx.doi.org/10.1016/j.nuclphysb.2011.08.011. Disponível em: https://www.sciencedirect.com/science/article/pii/S0550321311004445?via%3Dihub. Acesso em:25 maio 2020.
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/jspui/handle/123456789/29060
dc.identifier.issn.none.fl_str_mv 0550-3213 (online)
dc.identifier.doi.none.fl_str_mv 10.1016/j.nuclphysb.2011.08.011
identifier_str_mv FERRAZ FILHO, Alvaro; KOCHETOV, E. A. Effective action for strongly correlated electron systems. Nuclear Physics B, [s. l.], v. 853, n. 3, p. 710-738, dez. 2011. ISSN 0550-3213. DOI http://dx.doi.org/10.1016/j.nuclphysb.2011.08.011. Disponível em: https://www.sciencedirect.com/science/article/pii/S0550321311004445?via%3Dihub. Acesso em:25 maio 2020.
0550-3213 (online)
10.1016/j.nuclphysb.2011.08.011
url https://repositorio.ufrn.br/jspui/handle/123456789/29060
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv Attribution 3.0 Brazil
http://creativecommons.org/licenses/by/3.0/br/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 3.0 Brazil
http://creativecommons.org/licenses/by/3.0/br/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRN
instname:Universidade Federal do Rio Grande do Norte (UFRN)
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instname_str Universidade Federal do Rio Grande do Norte (UFRN)
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institution UFRN
reponame_str Repositório Institucional da UFRN
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