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
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/132231
Ver los metadatos del registro completo
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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:UNLP2025-10-22T17:12:42Zoai: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:13292025-10-22 17:12:42.618SEDICI (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. |
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2019 |
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2019-07-18 |
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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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http://sedici.unlp.edu.ar/handle/10915/132231 |
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eng |
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eng |
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