Thermal phase transitions for Dicke-type models in the ultrastrong-coupling limit

Detalhes bibliográficos
Autor(a) principal: Alcalde, M. Aparicio [UNESP]
Data de Publicação: 2012
Outros Autores: Bucher, M., Emary, C., Brandes, T.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1103/PhysRevE.86.012101
http://hdl.handle.net/11449/226917
Resumo: We consider the Dicke model in the ultrastrong-coupling limit to investigate thermal phase transitions and their precursors at finite particle numbers N for bosonic and fermionic systems. We derive partition functions with degeneracy factors that account for the number of configurations and derive explicit expressions for the Landau free energy. This allows us to discuss the difference between the original Dicke (fermionic) and the bosonic case. We find a crossover between these two cases that shows up, for example, in the specific heat. © 2012 American Physical Society.
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spelling Thermal phase transitions for Dicke-type models in the ultrastrong-coupling limitWe consider the Dicke model in the ultrastrong-coupling limit to investigate thermal phase transitions and their precursors at finite particle numbers N for bosonic and fermionic systems. We derive partition functions with degeneracy factors that account for the number of configurations and derive explicit expressions for the Landau free energy. This allows us to discuss the difference between the original Dicke (fermionic) and the bosonic case. We find a crossover between these two cases that shows up, for example, in the specific heat. © 2012 American Physical Society.Instituto de Física Teórica UNESP-São Paulo State University, Caixa Postal 70532-2, 01156-970 São Paulo, SPInstitut für Theoretische Physik TU Berlin, Hardenbergstr. 36, D-10623 BerlinInstituto de Física Teórica UNESP-São Paulo State University, Caixa Postal 70532-2, 01156-970 São Paulo, SPUniversidade Estadual Paulista (UNESP)TU BerlinAlcalde, M. Aparicio [UNESP]Bucher, M.Emary, C.Brandes, T.2022-04-29T04:22:53Z2022-04-29T04:22:53Z2012-07-18info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1103/PhysRevE.86.012101Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, v. 86, n. 1, 2012.1539-37551550-2376http://hdl.handle.net/11449/22691710.1103/PhysRevE.86.0121012-s2.0-84864440375Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Review E - Statistical, Nonlinear, and Soft Matter Physicsinfo:eu-repo/semantics/openAccess2022-04-29T04:22:53Zoai:repositorio.unesp.br:11449/226917Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:17:43.071616Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Thermal phase transitions for Dicke-type models in the ultrastrong-coupling limit
title Thermal phase transitions for Dicke-type models in the ultrastrong-coupling limit
spellingShingle Thermal phase transitions for Dicke-type models in the ultrastrong-coupling limit
Alcalde, M. Aparicio [UNESP]
title_short Thermal phase transitions for Dicke-type models in the ultrastrong-coupling limit
title_full Thermal phase transitions for Dicke-type models in the ultrastrong-coupling limit
title_fullStr Thermal phase transitions for Dicke-type models in the ultrastrong-coupling limit
title_full_unstemmed Thermal phase transitions for Dicke-type models in the ultrastrong-coupling limit
title_sort Thermal phase transitions for Dicke-type models in the ultrastrong-coupling limit
author Alcalde, M. Aparicio [UNESP]
author_facet Alcalde, M. Aparicio [UNESP]
Bucher, M.
Emary, C.
Brandes, T.
author_role author
author2 Bucher, M.
Emary, C.
Brandes, T.
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
TU Berlin
dc.contributor.author.fl_str_mv Alcalde, M. Aparicio [UNESP]
Bucher, M.
Emary, C.
Brandes, T.
description We consider the Dicke model in the ultrastrong-coupling limit to investigate thermal phase transitions and their precursors at finite particle numbers N for bosonic and fermionic systems. We derive partition functions with degeneracy factors that account for the number of configurations and derive explicit expressions for the Landau free energy. This allows us to discuss the difference between the original Dicke (fermionic) and the bosonic case. We find a crossover between these two cases that shows up, for example, in the specific heat. © 2012 American Physical Society.
publishDate 2012
dc.date.none.fl_str_mv 2012-07-18
2022-04-29T04:22:53Z
2022-04-29T04:22:53Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1103/PhysRevE.86.012101
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, v. 86, n. 1, 2012.
1539-3755
1550-2376
http://hdl.handle.net/11449/226917
10.1103/PhysRevE.86.012101
2-s2.0-84864440375
url http://dx.doi.org/10.1103/PhysRevE.86.012101
http://hdl.handle.net/11449/226917
identifier_str_mv Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, v. 86, n. 1, 2012.
1539-3755
1550-2376
10.1103/PhysRevE.86.012101
2-s2.0-84864440375
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808128342087434240

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