Thermal twin stars within a hybrid equation of state based on a nonlocal chiral quark model compatible with modern astrophysical observations

Autores
Carlomagno, Juan Pablo; Contrera, Gustavo Aníbal Gabriel; Grunfeld, Ana Gabriela; Blaschke, D.
Año de publicación
2024
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We investigate the extension to finite temperatures and neutrino chemical potentials of a recentlydeveloped nonlocal chiral quark model approach to the equation of state of neutron star matter.We consider two light quark flavors and current-current interactions in the scalar-pseudoscalar,vector, and diquark pairing channels, where the nonlocality of the currents is taken into accountby a Gaussian form factor that depends on the spatial components of the 4-momentum. Withinthis framework, we analyze order parameters, critical temperatures, phase diagrams, equation ofstate, and mass-radius relations for different temperatures and neutrino chemical potentials. Forparameters of the model that are constrained by recent multi-messenger observations of neutronstars, we find that the mass-radius diagram for isothermal hybrid star sequences exhibits the thermaltwin phenomenon for temperatures above 30 MeV.
Fil: Carlomagno, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Fil: Contrera, Gustavo Aníbal Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Fil: Grunfeld, Ana Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina
Fil: Blaschke, D.. University of Wroclaw; Polonia
Materia
Compact stars
Chiral quark models
Nuclear Astrophysics
Quantum Chromodynamics
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/241135
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Thermal twin stars within a hybrid equation of state based on a nonlocal chiral quark model compatible with modern astrophysical observationsCarlomagno, Juan PabloContrera, Gustavo Aníbal GabrielGrunfeld, Ana GabrielaBlaschke, D.Compact starsChiral quark modelsNuclear AstrophysicsQuantum Chromodynamicshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We investigate the extension to finite temperatures and neutrino chemical potentials of a recentlydeveloped nonlocal chiral quark model approach to the equation of state of neutron star matter.We consider two light quark flavors and current-current interactions in the scalar-pseudoscalar,vector, and diquark pairing channels, where the nonlocality of the currents is taken into accountby a Gaussian form factor that depends on the spatial components of the 4-momentum. Withinthis framework, we analyze order parameters, critical temperatures, phase diagrams, equation ofstate, and mass-radius relations for different temperatures and neutrino chemical potentials. Forparameters of the model that are constrained by recent multi-messenger observations of neutronstars, we find that the mass-radius diagram for isothermal hybrid star sequences exhibits the thermaltwin phenomenon for temperatures above 30 MeV.Fil: Carlomagno, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Contrera, Gustavo Aníbal Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Grunfeld, Ana Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; ArgentinaFil: Blaschke, D.. University of Wroclaw; PoloniaAmerican Physical Society2024-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/241135Carlomagno, Juan Pablo; Contrera, Gustavo Aníbal Gabriel; Grunfeld, Ana Gabriela; Blaschke, D.; Thermal twin stars within a hybrid equation of state based on a nonlocal chiral quark model compatible with modern astrophysical observations; American Physical Society; Physical Review D; 109; 4; 2-2024; 1-152470-0010CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prd/abstract/10.1103/PhysRevD.109.043050info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.109.043050info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-06-10T09:46:23Zoai:ri.conicet.gov.ar:11336/241135instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982026-06-10 09:46:23.6CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Thermal twin stars within a hybrid equation of state based on a nonlocal chiral quark model compatible with modern astrophysical observations
title Thermal twin stars within a hybrid equation of state based on a nonlocal chiral quark model compatible with modern astrophysical observations
spellingShingle Thermal twin stars within a hybrid equation of state based on a nonlocal chiral quark model compatible with modern astrophysical observations
Carlomagno, Juan Pablo
Compact stars
Chiral quark models
Nuclear Astrophysics
Quantum Chromodynamics
title_short Thermal twin stars within a hybrid equation of state based on a nonlocal chiral quark model compatible with modern astrophysical observations
title_full Thermal twin stars within a hybrid equation of state based on a nonlocal chiral quark model compatible with modern astrophysical observations
title_fullStr Thermal twin stars within a hybrid equation of state based on a nonlocal chiral quark model compatible with modern astrophysical observations
title_full_unstemmed Thermal twin stars within a hybrid equation of state based on a nonlocal chiral quark model compatible with modern astrophysical observations
title_sort Thermal twin stars within a hybrid equation of state based on a nonlocal chiral quark model compatible with modern astrophysical observations
dc.creator.none.fl_str_mv Carlomagno, Juan Pablo
Contrera, Gustavo Aníbal Gabriel
Grunfeld, Ana Gabriela
Blaschke, D.
author Carlomagno, Juan Pablo
author_facet Carlomagno, Juan Pablo
Contrera, Gustavo Aníbal Gabriel
Grunfeld, Ana Gabriela
Blaschke, D.
author_role author
author2 Contrera, Gustavo Aníbal Gabriel
Grunfeld, Ana Gabriela
Blaschke, D.
author2_role author
author
author
dc.subject.none.fl_str_mv Compact stars
Chiral quark models
Nuclear Astrophysics
Quantum Chromodynamics
topic Compact stars
Chiral quark models
Nuclear Astrophysics
Quantum Chromodynamics
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We investigate the extension to finite temperatures and neutrino chemical potentials of a recentlydeveloped nonlocal chiral quark model approach to the equation of state of neutron star matter.We consider two light quark flavors and current-current interactions in the scalar-pseudoscalar,vector, and diquark pairing channels, where the nonlocality of the currents is taken into accountby a Gaussian form factor that depends on the spatial components of the 4-momentum. Withinthis framework, we analyze order parameters, critical temperatures, phase diagrams, equation ofstate, and mass-radius relations for different temperatures and neutrino chemical potentials. Forparameters of the model that are constrained by recent multi-messenger observations of neutronstars, we find that the mass-radius diagram for isothermal hybrid star sequences exhibits the thermaltwin phenomenon for temperatures above 30 MeV.
Fil: Carlomagno, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Fil: Contrera, Gustavo Aníbal Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Fil: Grunfeld, Ana Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina
Fil: Blaschke, D.. University of Wroclaw; Polonia
description We investigate the extension to finite temperatures and neutrino chemical potentials of a recentlydeveloped nonlocal chiral quark model approach to the equation of state of neutron star matter.We consider two light quark flavors and current-current interactions in the scalar-pseudoscalar,vector, and diquark pairing channels, where the nonlocality of the currents is taken into accountby a Gaussian form factor that depends on the spatial components of the 4-momentum. Withinthis framework, we analyze order parameters, critical temperatures, phase diagrams, equation ofstate, and mass-radius relations for different temperatures and neutrino chemical potentials. Forparameters of the model that are constrained by recent multi-messenger observations of neutronstars, we find that the mass-radius diagram for isothermal hybrid star sequences exhibits the thermaltwin phenomenon for temperatures above 30 MeV.
publishDate 2024
dc.date.none.fl_str_mv 2024-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/241135
Carlomagno, Juan Pablo; Contrera, Gustavo Aníbal Gabriel; Grunfeld, Ana Gabriela; Blaschke, D.; Thermal twin stars within a hybrid equation of state based on a nonlocal chiral quark model compatible with modern astrophysical observations; American Physical Society; Physical Review D; 109; 4; 2-2024; 1-15
2470-0010
CONICET Digital
CONICET
url http://hdl.handle.net/11336/241135
identifier_str_mv Carlomagno, Juan Pablo; Contrera, Gustavo Aníbal Gabriel; Grunfeld, Ana Gabriela; Blaschke, D.; Thermal twin stars within a hybrid equation of state based on a nonlocal chiral quark model compatible with modern astrophysical observations; American Physical Society; Physical Review D; 109; 4; 2-2024; 1-15
2470-0010
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prd/abstract/10.1103/PhysRevD.109.043050
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.109.043050
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
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:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.98848

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