Meson properties at finite temperature in a three flavor nonlocal chiral quark model with Polyakov loop

Autores
Contrera, Gustavo Aníbal; Gómez Dumm, Daniel Alberto; Scoccola, Norberto Nerio
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study the finite temperature behavior of light scalar and pseudoscalar meson properties in the context of a three-flavor nonlocal chiral quark model. The model includes mixing with active strangeness degrees of freedom, and takes care of the effect of gauge interactions by coupling the quarks with the Polyakov loop. We analyze the chiral restoration and deconfinement transitions, as well as the temperature dependence of meson masses, mixing angles and decay constants. The critical temperature is found to be Tc ≃ 202 MeV, in better agreement with lattice results than the value recently obtained in the local SU(3) PNJL model. It is seen that above Tc pseudoscalar meson masses get increased, becoming degenerate with the masses of their chiral partners. The temperatures at which this matching occurs depend on the strange quark composition of the corresponding mesons. The topological susceptibility shows a sharp decrease after the chiral transition, signalling the vanishing of the U(1)TA anomaly for large temperatures.
Instituto de Física La Plata
Materia
Física
Particle physics
Physics
Quark model
Strange quark
Meson
Quark–gluon plasma
Strangeness
Pseudoscalar meson
Deconfinement
Quark
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/126172
Acceder
id SEDICI_fa856b36e40113d80e2feee24dc05ded
oai_identifier_str oai:sedici.unlp.edu.ar:10915/126172
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Meson properties at finite temperature in a three flavor nonlocal chiral quark model with Polyakov loopContrera, Gustavo AníbalGómez Dumm, Daniel AlbertoScoccola, Norberto NerioFísicaParticle physicsPhysicsQuark modelStrange quarkMesonQuark–gluon plasmaStrangenessPseudoscalar mesonDeconfinementQuarkWe study the finite temperature behavior of light scalar and pseudoscalar meson properties in the context of a three-flavor nonlocal chiral quark model. The model includes mixing with active strangeness degrees of freedom, and takes care of the effect of gauge interactions by coupling the quarks with the Polyakov loop. We analyze the chiral restoration and deconfinement transitions, as well as the temperature dependence of meson masses, mixing angles and decay constants. The critical temperature is found to be T<sub>c</sub> ≃ 202 MeV, in better agreement with lattice results than the value recently obtained in the local SU(3) PNJL model. It is seen that above T<sub>c</sub> pseudoscalar meson masses get increased, becoming degenerate with the masses of their chiral partners. The temperatures at which this matching occurs depend on the strange quark composition of the corresponding mesons. The topological susceptibility shows a sharp decrease after the chiral transition, signalling the vanishing of the U(1)T<sub>A</sub> anomaly for large temperatures.Instituto de Física La Plata2010-03-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/126172enginfo:eu-repo/semantics/altIdentifier/issn/1550-7998info:eu-repo/semantics/altIdentifier/issn/1550-2368info:eu-repo/semantics/altIdentifier/arxiv/0911.3848info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevd.81.054005info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:30:23Zoai:sedici.unlp.edu.ar:10915/126172Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:30:24.128SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Meson properties at finite temperature in a three flavor nonlocal chiral quark model with Polyakov loop
title Meson properties at finite temperature in a three flavor nonlocal chiral quark model with Polyakov loop
spellingShingle Meson properties at finite temperature in a three flavor nonlocal chiral quark model with Polyakov loop
Contrera, Gustavo Aníbal
Física
Particle physics
Physics
Quark model
Strange quark
Meson
Quark–gluon plasma
Strangeness
Pseudoscalar meson
Deconfinement
Quark
title_short Meson properties at finite temperature in a three flavor nonlocal chiral quark model with Polyakov loop
title_full Meson properties at finite temperature in a three flavor nonlocal chiral quark model with Polyakov loop
title_fullStr Meson properties at finite temperature in a three flavor nonlocal chiral quark model with Polyakov loop
title_full_unstemmed Meson properties at finite temperature in a three flavor nonlocal chiral quark model with Polyakov loop
title_sort Meson properties at finite temperature in a three flavor nonlocal chiral quark model with Polyakov loop
dc.creator.none.fl_str_mv Contrera, Gustavo Aníbal
Gómez Dumm, Daniel Alberto
Scoccola, Norberto Nerio
author Contrera, Gustavo Aníbal
author_facet Contrera, Gustavo Aníbal
Gómez Dumm, Daniel Alberto
Scoccola, Norberto Nerio
author_role author
author2 Gómez Dumm, Daniel Alberto
Scoccola, Norberto Nerio
author2_role author
author
dc.subject.none.fl_str_mv Física
Particle physics
Physics
Quark model
Strange quark
Meson
Quark–gluon plasma
Strangeness
Pseudoscalar meson
Deconfinement
Quark
topic Física
Particle physics
Physics
Quark model
Strange quark
Meson
Quark–gluon plasma
Strangeness
Pseudoscalar meson
Deconfinement
Quark
dc.description.none.fl_txt_mv We study the finite temperature behavior of light scalar and pseudoscalar meson properties in the context of a three-flavor nonlocal chiral quark model. The model includes mixing with active strangeness degrees of freedom, and takes care of the effect of gauge interactions by coupling the quarks with the Polyakov loop. We analyze the chiral restoration and deconfinement transitions, as well as the temperature dependence of meson masses, mixing angles and decay constants. The critical temperature is found to be T<sub>c</sub> ≃ 202 MeV, in better agreement with lattice results than the value recently obtained in the local SU(3) PNJL model. It is seen that above T<sub>c</sub> pseudoscalar meson masses get increased, becoming degenerate with the masses of their chiral partners. The temperatures at which this matching occurs depend on the strange quark composition of the corresponding mesons. The topological susceptibility shows a sharp decrease after the chiral transition, signalling the vanishing of the U(1)T<sub>A</sub> anomaly for large temperatures.
Instituto de Física La Plata
description We study the finite temperature behavior of light scalar and pseudoscalar meson properties in the context of a three-flavor nonlocal chiral quark model. The model includes mixing with active strangeness degrees of freedom, and takes care of the effect of gauge interactions by coupling the quarks with the Polyakov loop. We analyze the chiral restoration and deconfinement transitions, as well as the temperature dependence of meson masses, mixing angles and decay constants. The critical temperature is found to be T<sub>c</sub> ≃ 202 MeV, in better agreement with lattice results than the value recently obtained in the local SU(3) PNJL model. It is seen that above T<sub>c</sub> pseudoscalar meson masses get increased, becoming degenerate with the masses of their chiral partners. The temperatures at which this matching occurs depend on the strange quark composition of the corresponding mesons. The topological susceptibility shows a sharp decrease after the chiral transition, signalling the vanishing of the U(1)T<sub>A</sub> anomaly for large temperatures.
publishDate 2010
dc.date.none.fl_str_mv 2010-03-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/126172
url http://sedici.unlp.edu.ar/handle/10915/126172
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1550-7998
info:eu-repo/semantics/altIdentifier/issn/1550-2368
info:eu-repo/semantics/altIdentifier/arxiv/0911.3848
info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevd.81.054005
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.070432

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