Hot quark matter and (proto-) neutron stars

Autores
Malfatti, Germán; Orsaria, Milva Gabriela; Contrera, Gustavo Aníbal; Weber, Fridolin; Ranea Sandoval, Ignacio Francisco
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In the first part of this paper, we use a nonlocal extension of the three-flavor Polyakov-Nambu-Jona-Lasinio model, which takes into account flavor-mixing, momentum dependent quark masses, and vector interactions among quarks, to investigate the possible existence of a spinodal region (determined by the vanishing of the speed of sound) in the QCD phase diagram and determine the temperature and chemical potential of the critical end point. In the second part of the paper, we investigate the quark-hadron composition of baryonic matter at zero as well as nonzero temperature. This is of great topical interest for the analysis and interpretation of neutron star merger events such as GW170817. With this in mind, we determine the composition of proto-neutron star matter for entropies and lepton fractions that are typical of such matter. These compositions are used to delineate the evolution of proto-neutron stars to neutron stars in the baryon-mass versus gravitational-mass diagram. The hot stellar models turn out to contain significant fractions of hyperons and isobars but no deconfined quarks. The latter are found to exist only in cold neutron stars.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Física La Plata
Materia
Física
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/132231

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network_name_str SEDICI (UNLP)
spelling Hot quark matter and (proto-) neutron starsMalfatti, GermánOrsaria, Milva GabrielaContrera, Gustavo AníbalWeber, FridolinRanea Sandoval, Ignacio FranciscoFísicaIn the first part of this paper, we use a nonlocal extension of the three-flavor Polyakov-Nambu-Jona-Lasinio model, which takes into account flavor-mixing, momentum dependent quark masses, and vector interactions among quarks, to investigate the possible existence of a spinodal region (determined by the vanishing of the speed of sound) in the QCD phase diagram and determine the temperature and chemical potential of the critical end point. In the second part of the paper, we investigate the quark-hadron composition of baryonic matter at zero as well as nonzero temperature. This is of great topical interest for the analysis and interpretation of neutron star merger events such as GW170817. With this in mind, we determine the composition of proto-neutron star matter for entropies and lepton fractions that are typical of such matter. These compositions are used to delineate the evolution of proto-neutron stars to neutron stars in the baryon-mass versus gravitational-mass diagram. The hot stellar models turn out to contain significant fractions of hyperons and isobars but no deconfined quarks. The latter are found to exist only in cold neutron stars.Facultad de Ciencias Astronómicas y GeofísicasInstituto de Física La Plata2019-07-18info: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/10915/132231enginfo:eu-repo/semantics/altIdentifier/issn/2469-9985info:eu-repo/semantics/altIdentifier/issn/2469-9993info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevc.100.015803info:eu-repo/semantics/altIdentifier/arxiv/1907.06597info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:31:48Zoai:sedici.unlp.edu.ar:10915/132231Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:31:48.232SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Hot quark matter and (proto-) neutron stars
title Hot quark matter and (proto-) neutron stars
spellingShingle Hot quark matter and (proto-) neutron stars
Malfatti, Germán
Física
title_short Hot quark matter and (proto-) neutron stars
title_full Hot quark matter and (proto-) neutron stars
title_fullStr Hot quark matter and (proto-) neutron stars
title_full_unstemmed Hot quark matter and (proto-) neutron stars
title_sort Hot quark matter and (proto-) neutron stars
dc.creator.none.fl_str_mv Malfatti, Germán
Orsaria, Milva Gabriela
Contrera, Gustavo Aníbal
Weber, Fridolin
Ranea Sandoval, Ignacio Francisco
author Malfatti, Germán
author_facet Malfatti, Germán
Orsaria, Milva Gabriela
Contrera, Gustavo Aníbal
Weber, Fridolin
Ranea Sandoval, Ignacio Francisco
author_role author
author2 Orsaria, Milva Gabriela
Contrera, Gustavo Aníbal
Weber, Fridolin
Ranea Sandoval, Ignacio Francisco
author2_role author
author
author
author
dc.subject.none.fl_str_mv Física
topic Física
dc.description.none.fl_txt_mv In the first part of this paper, we use a nonlocal extension of the three-flavor Polyakov-Nambu-Jona-Lasinio model, which takes into account flavor-mixing, momentum dependent quark masses, and vector interactions among quarks, to investigate the possible existence of a spinodal region (determined by the vanishing of the speed of sound) in the QCD phase diagram and determine the temperature and chemical potential of the critical end point. In the second part of the paper, we investigate the quark-hadron composition of baryonic matter at zero as well as nonzero temperature. This is of great topical interest for the analysis and interpretation of neutron star merger events such as GW170817. With this in mind, we determine the composition of proto-neutron star matter for entropies and lepton fractions that are typical of such matter. These compositions are used to delineate the evolution of proto-neutron stars to neutron stars in the baryon-mass versus gravitational-mass diagram. The hot stellar models turn out to contain significant fractions of hyperons and isobars but no deconfined quarks. The latter are found to exist only in cold neutron stars.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Física La Plata
description In the first part of this paper, we use a nonlocal extension of the three-flavor Polyakov-Nambu-Jona-Lasinio model, which takes into account flavor-mixing, momentum dependent quark masses, and vector interactions among quarks, to investigate the possible existence of a spinodal region (determined by the vanishing of the speed of sound) in the QCD phase diagram and determine the temperature and chemical potential of the critical end point. In the second part of the paper, we investigate the quark-hadron composition of baryonic matter at zero as well as nonzero temperature. This is of great topical interest for the analysis and interpretation of neutron star merger events such as GW170817. With this in mind, we determine the composition of proto-neutron star matter for entropies and lepton fractions that are typical of such matter. These compositions are used to delineate the evolution of proto-neutron stars to neutron stars in the baryon-mass versus gravitational-mass diagram. The hot stellar models turn out to contain significant fractions of hyperons and isobars but no deconfined quarks. The latter are found to exist only in cold neutron stars.
publishDate 2019
dc.date.none.fl_str_mv 2019-07-18
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
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/132231
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dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/2469-9985
info:eu-repo/semantics/altIdentifier/issn/2469-9993
info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevc.100.015803
info:eu-repo/semantics/altIdentifier/arxiv/1907.06597
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 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
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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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