Excited-state quantum phase transitions in the anharmonic Lipkin-Meshkov-Glick model: Static aspects

The basic Lipkin-Meshkov-Glick model displays a second-order ground-state quantum phase transition and an excited-state quantum phase transition (ESQPT). The inclusion of an anharmonic term in the Hamiltonian implies a second ESQPT of a different nature. We characterize this ESQPT using the mean fie...

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Detalles Bibliográficos
Autores: Gamito, J., Khalouf-Rivera, Jamil, Arias Carrasco, José Miguel, Pérez Fernández, Pedro, Pérez Bernal, Francisco
Tipo de recurso: artículo
Fecha de publicación:2022
País:España
Institución:Universidad de Huelva (UHU)
Repositorio:Arias Montano. Repositorio Institucional de la Universidad de Huelva
Idioma:inglés
OAI Identifier:oai:ariasmontano.uhu.es:10272/21797
Acceso en línea:https://hdl.handle.net/10272/21797
Access Level:acceso abierto
Palabra clave:22 Física
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spelling Excited-state quantum phase transitions in the anharmonic Lipkin-Meshkov-Glick model: Static aspectsGamito, J.Khalouf-Rivera, JamilArias Carrasco, José MiguelPérez Fernández, PedroPérez Bernal, Francisco22 FísicaThe basic Lipkin-Meshkov-Glick model displays a second-order ground-state quantum phase transition and an excited-state quantum phase transition (ESQPT). The inclusion of an anharmonic term in the Hamiltonian implies a second ESQPT of a different nature. We characterize this ESQPT using the mean field limit of the model. The alternative ESQPT, associated with the changes in the boundary of the finite Hilbert space of the system, can be properly described using the order parameter of the ground-state quantum phase transition, the energy gap between adjacent states, the participation ratio, and the quantum fidelity susceptibility.American Physical Society20222022-01-0120222022-01-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10272/21797reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelvainstname:Universidad de Huelva (UHU)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:ariasmontano.uhu.es:10272/217972026-06-02T14:58:11Z
dc.title.none.fl_str_mv Excited-state quantum phase transitions in the anharmonic Lipkin-Meshkov-Glick model: Static aspects
title Excited-state quantum phase transitions in the anharmonic Lipkin-Meshkov-Glick model: Static aspects
spellingShingle Excited-state quantum phase transitions in the anharmonic Lipkin-Meshkov-Glick model: Static aspects
Gamito, J.
22 Física
title_short Excited-state quantum phase transitions in the anharmonic Lipkin-Meshkov-Glick model: Static aspects
title_full Excited-state quantum phase transitions in the anharmonic Lipkin-Meshkov-Glick model: Static aspects
title_fullStr Excited-state quantum phase transitions in the anharmonic Lipkin-Meshkov-Glick model: Static aspects
title_full_unstemmed Excited-state quantum phase transitions in the anharmonic Lipkin-Meshkov-Glick model: Static aspects
title_sort Excited-state quantum phase transitions in the anharmonic Lipkin-Meshkov-Glick model: Static aspects
dc.creator.none.fl_str_mv Gamito, J.
Khalouf-Rivera, Jamil
Arias Carrasco, José Miguel
Pérez Fernández, Pedro
Pérez Bernal, Francisco
author Gamito, J.
author_facet Gamito, J.
Khalouf-Rivera, Jamil
Arias Carrasco, José Miguel
Pérez Fernández, Pedro
Pérez Bernal, Francisco
author_role author
author2 Khalouf-Rivera, Jamil
Arias Carrasco, José Miguel
Pérez Fernández, Pedro
Pérez Bernal, Francisco
author2_role author
author
author
author
dc.contributor.none.fl_str_mv
dc.subject.none.fl_str_mv 22 Física
topic 22 Física
description The basic Lipkin-Meshkov-Glick model displays a second-order ground-state quantum phase transition and an excited-state quantum phase transition (ESQPT). The inclusion of an anharmonic term in the Hamiltonian implies a second ESQPT of a different nature. We characterize this ESQPT using the mean field limit of the model. The alternative ESQPT, associated with the changes in the boundary of the finite Hilbert space of the system, can be properly described using the order parameter of the ground-state quantum phase transition, the energy gap between adjacent states, the participation ratio, and the quantum fidelity susceptibility.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-01-01
2022
2022-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10272/21797
url https://hdl.handle.net/10272/21797
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelva
instname:Universidad de Huelva (UHU)
instname_str Universidad de Huelva (UHU)
reponame_str Arias Montano. Repositorio Institucional de la Universidad de Huelva
collection Arias Montano. Repositorio Institucional de la Universidad de Huelva
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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