Constant-sound-speed parametrization for Nambu-Jona-Lasinio models of quark matter in hybrid stars

Autores
Ranea Sandoval, Ignacio Francisco; Han, Sophia; Orsaria, Milva Gabriela; Contrera, Gustavo Aníbal Gabriel; Fridolin, Weber; Alford, Mark G.
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The discovery of pulsars as heavy as 2 solar masses has led astrophysicists to rethink the core compositions of neutron stars, ruling out many models for the nuclear equations of state (EoS). We explore the hybrid stars that occur when hadronic matter is treated in a relativistic mean-field approximation and quark matter is modeled by three-flavor local and nonlocal Nambu-Jona-Lasinio (NJL) models with repulsive vector interactions. The NJL models typically yield equations of state that feature a first-order transition to quark matter. Assuming that the quark-hadron surface tension is high enough to disfavor mixed phases and restricting to EoSs that allow stars to reach 2 solar masses, we find that the appearance of the quark-matter core either destabilizes the star immediately (this is typical for nonlocal NJL models) or leads to a very short hybrid star branch in the mass-radius relation (this is typical for local NJL models). Using the constant-sound-speed parametrization we can see that the reason for the near absence of hybrid stars is that the transition pressure is fairly high and the transition is strongly first order.
Fil: Ranea Sandoval, Ignacio Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Han, Sophia. University of Tennessee; Estados Unidos. Oak Ridge National Laboratory; Estados Unidos. University of Washington; Estados Unidos
Fil: Orsaria, Milva Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica 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. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Fridolin, Weber. San Diego State University; Estados Unidos. University of California; Estados Unidos
Fil: Alford, Mark G.. University of Washington; Estados Unidos
Materia
Hybrid stars
NJL models
constant-sound-speed parametrization
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:11336/54416
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Constant-sound-speed parametrization for Nambu-Jona-Lasinio models of quark matter in hybrid starsRanea Sandoval, Ignacio FranciscoHan, SophiaOrsaria, Milva GabrielaContrera, Gustavo Aníbal GabrielFridolin, WeberAlford, Mark G.Hybrid starsNJL modelsconstant-sound-speed parametrizationhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The discovery of pulsars as heavy as 2 solar masses has led astrophysicists to rethink the core compositions of neutron stars, ruling out many models for the nuclear equations of state (EoS). We explore the hybrid stars that occur when hadronic matter is treated in a relativistic mean-field approximation and quark matter is modeled by three-flavor local and nonlocal Nambu-Jona-Lasinio (NJL) models with repulsive vector interactions. The NJL models typically yield equations of state that feature a first-order transition to quark matter. Assuming that the quark-hadron surface tension is high enough to disfavor mixed phases and restricting to EoSs that allow stars to reach 2 solar masses, we find that the appearance of the quark-matter core either destabilizes the star immediately (this is typical for nonlocal NJL models) or leads to a very short hybrid star branch in the mass-radius relation (this is typical for local NJL models). Using the constant-sound-speed parametrization we can see that the reason for the near absence of hybrid stars is that the transition pressure is fairly high and the transition is strongly first order.Fil: Ranea Sandoval, Ignacio Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Han, Sophia. University of Tennessee; Estados Unidos. Oak Ridge National Laboratory; Estados Unidos. University of Washington; Estados UnidosFil: Orsaria, Milva Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica 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; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Fridolin, Weber. San Diego State University; Estados Unidos. University of California; Estados UnidosFil: Alford, Mark G.. University of Washington; Estados UnidosAmerican Physical Society2016-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/54416Ranea Sandoval, Ignacio Francisco; Han, Sophia; Orsaria, Milva Gabriela; Contrera, Gustavo Aníbal Gabriel; Fridolin, Weber; et al.; Constant-sound-speed parametrization for Nambu-Jona-Lasinio models of quark matter in hybrid stars; American Physical Society; Physical Review C; 93; 4; 4-2016; 1-122469-9993CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevC.93.045812info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prc/abstract/10.1103/PhysRevC.93.045812info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:03:10Zoai:ri.conicet.gov.ar:11336/54416instacron: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:34982025-09-10 13:03:10.839CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Constant-sound-speed parametrization for Nambu-Jona-Lasinio models of quark matter in hybrid stars
title Constant-sound-speed parametrization for Nambu-Jona-Lasinio models of quark matter in hybrid stars
spellingShingle Constant-sound-speed parametrization for Nambu-Jona-Lasinio models of quark matter in hybrid stars
Ranea Sandoval, Ignacio Francisco
Hybrid stars
NJL models
constant-sound-speed parametrization
title_short Constant-sound-speed parametrization for Nambu-Jona-Lasinio models of quark matter in hybrid stars
title_full Constant-sound-speed parametrization for Nambu-Jona-Lasinio models of quark matter in hybrid stars
title_fullStr Constant-sound-speed parametrization for Nambu-Jona-Lasinio models of quark matter in hybrid stars
title_full_unstemmed Constant-sound-speed parametrization for Nambu-Jona-Lasinio models of quark matter in hybrid stars
title_sort Constant-sound-speed parametrization for Nambu-Jona-Lasinio models of quark matter in hybrid stars
dc.creator.none.fl_str_mv Ranea Sandoval, Ignacio Francisco
Han, Sophia
Orsaria, Milva Gabriela
Contrera, Gustavo Aníbal Gabriel
Fridolin, Weber
Alford, Mark G.
author Ranea Sandoval, Ignacio Francisco
author_facet Ranea Sandoval, Ignacio Francisco
Han, Sophia
Orsaria, Milva Gabriela
Contrera, Gustavo Aníbal Gabriel
Fridolin, Weber
Alford, Mark G.
author_role author
author2 Han, Sophia
Orsaria, Milva Gabriela
Contrera, Gustavo Aníbal Gabriel
Fridolin, Weber
Alford, Mark G.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Hybrid stars
NJL models
constant-sound-speed parametrization
topic Hybrid stars
NJL models
constant-sound-speed parametrization
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The discovery of pulsars as heavy as 2 solar masses has led astrophysicists to rethink the core compositions of neutron stars, ruling out many models for the nuclear equations of state (EoS). We explore the hybrid stars that occur when hadronic matter is treated in a relativistic mean-field approximation and quark matter is modeled by three-flavor local and nonlocal Nambu-Jona-Lasinio (NJL) models with repulsive vector interactions. The NJL models typically yield equations of state that feature a first-order transition to quark matter. Assuming that the quark-hadron surface tension is high enough to disfavor mixed phases and restricting to EoSs that allow stars to reach 2 solar masses, we find that the appearance of the quark-matter core either destabilizes the star immediately (this is typical for nonlocal NJL models) or leads to a very short hybrid star branch in the mass-radius relation (this is typical for local NJL models). Using the constant-sound-speed parametrization we can see that the reason for the near absence of hybrid stars is that the transition pressure is fairly high and the transition is strongly first order.
Fil: Ranea Sandoval, Ignacio Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Han, Sophia. University of Tennessee; Estados Unidos. Oak Ridge National Laboratory; Estados Unidos. University of Washington; Estados Unidos
Fil: Orsaria, Milva Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica 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. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Fridolin, Weber. San Diego State University; Estados Unidos. University of California; Estados Unidos
Fil: Alford, Mark G.. University of Washington; Estados Unidos
description The discovery of pulsars as heavy as 2 solar masses has led astrophysicists to rethink the core compositions of neutron stars, ruling out many models for the nuclear equations of state (EoS). We explore the hybrid stars that occur when hadronic matter is treated in a relativistic mean-field approximation and quark matter is modeled by three-flavor local and nonlocal Nambu-Jona-Lasinio (NJL) models with repulsive vector interactions. The NJL models typically yield equations of state that feature a first-order transition to quark matter. Assuming that the quark-hadron surface tension is high enough to disfavor mixed phases and restricting to EoSs that allow stars to reach 2 solar masses, we find that the appearance of the quark-matter core either destabilizes the star immediately (this is typical for nonlocal NJL models) or leads to a very short hybrid star branch in the mass-radius relation (this is typical for local NJL models). Using the constant-sound-speed parametrization we can see that the reason for the near absence of hybrid stars is that the transition pressure is fairly high and the transition is strongly first order.
publishDate 2016
dc.date.none.fl_str_mv 2016-04
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/11336/54416
Ranea Sandoval, Ignacio Francisco; Han, Sophia; Orsaria, Milva Gabriela; Contrera, Gustavo Aníbal Gabriel; Fridolin, Weber; et al.; Constant-sound-speed parametrization for Nambu-Jona-Lasinio models of quark matter in hybrid stars; American Physical Society; Physical Review C; 93; 4; 4-2016; 1-12
2469-9993
CONICET Digital
CONICET
url http://hdl.handle.net/11336/54416
identifier_str_mv Ranea Sandoval, Ignacio Francisco; Han, Sophia; Orsaria, Milva Gabriela; Contrera, Gustavo Aníbal Gabriel; Fridolin, Weber; et al.; Constant-sound-speed parametrization for Nambu-Jona-Lasinio models of quark matter in hybrid stars; American Physical Society; Physical Review C; 93; 4; 4-2016; 1-12
2469-9993
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevC.93.045812
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prc/abstract/10.1103/PhysRevC.93.045812
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
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 12.993085

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