Hybrid stars within a covariant, nonlocal chiral quark model

Autores
Blaschke, David; Gómez Dumm, Daniel Alberto; Grunfeld, Ana Gabriela; Klähn, Thomas; Scoccola, Norberto Nerio
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a hybrid equation of state (EoS) for dense matter in which a nuclear matter phase is described within the Dirac-Brueckner-Hartree-Fock (DBHF) approach and a two-flavor quark matter phase is modelled according to a recently developed covariant, nonlocal chiral quark model. We show that modern observational constraints for compact star masses (M~2M⊙) can be satisfied when a small vector-like four quark interaction is taken into account. The corresponding isospin symmetric EoS is consistent with flow data analyses of heavy ion collisions and points to a deconfinement transition at about 0.55 fm⁻³.
Instituto de Física La Plata
Materia
Física
Particle physics
Physics
Quark star
Nuclear matter
Isospin
Quark–gluon plasma
Center (category theory)
Deconfinement
Strange matter
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:10915/126471
Acceder
id SEDICI_c1e83de9b911f2359679ff2423debb41
oai_identifier_str oai:sedici.unlp.edu.ar:10915/126471
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Hybrid stars within a covariant, nonlocal chiral quark modelBlaschke, DavidGómez Dumm, Daniel AlbertoGrunfeld, Ana GabrielaKlähn, ThomasScoccola, Norberto NerioFísicaParticle physicsPhysicsQuark starNuclear matterIsospinQuark–gluon plasmaCenter (category theory)DeconfinementStrange matterQuarkWe present a hybrid equation of state (EoS) for dense matter in which a nuclear matter phase is described within the Dirac-Brueckner-Hartree-Fock (DBHF) approach and a two-flavor quark matter phase is modelled according to a recently developed covariant, nonlocal chiral quark model. We show that modern observational constraints for compact star masses (M~2M⊙) can be satisfied when a small vector-like four quark interaction is taken into account. The corresponding isospin symmetric EoS is consistent with flow data analyses of heavy ion collisions and points to a deconfinement transition at about 0.55 fm⁻³.Instituto de Física La Plata2007-06-14info: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/10915/126471enginfo:eu-repo/semantics/altIdentifier/issn/0556-2813info:eu-repo/semantics/altIdentifier/issn/1089-490Xinfo:eu-repo/semantics/altIdentifier/arxiv/nucl-th/0703088info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevc.75.065804info: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:UNLP2025-10-15T11:22:11Zoai:sedici.unlp.edu.ar:10915/126471Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:22:12.005SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Hybrid stars within a covariant, nonlocal chiral quark model
title Hybrid stars within a covariant, nonlocal chiral quark model
spellingShingle Hybrid stars within a covariant, nonlocal chiral quark model
Blaschke, David
Física
Particle physics
Physics
Quark star
Nuclear matter
Isospin
Quark–gluon plasma
Center (category theory)
Deconfinement
Strange matter
Quark
title_short Hybrid stars within a covariant, nonlocal chiral quark model
title_full Hybrid stars within a covariant, nonlocal chiral quark model
title_fullStr Hybrid stars within a covariant, nonlocal chiral quark model
title_full_unstemmed Hybrid stars within a covariant, nonlocal chiral quark model
title_sort Hybrid stars within a covariant, nonlocal chiral quark model
dc.creator.none.fl_str_mv Blaschke, David
Gómez Dumm, Daniel Alberto
Grunfeld, Ana Gabriela
Klähn, Thomas
Scoccola, Norberto Nerio
author Blaschke, David
author_facet Blaschke, David
Gómez Dumm, Daniel Alberto
Grunfeld, Ana Gabriela
Klähn, Thomas
Scoccola, Norberto Nerio
author_role author
author2 Gómez Dumm, Daniel Alberto
Grunfeld, Ana Gabriela
Klähn, Thomas
Scoccola, Norberto Nerio
author2_role author
author
author
author
dc.subject.none.fl_str_mv Física
Particle physics
Physics
Quark star
Nuclear matter
Isospin
Quark–gluon plasma
Center (category theory)
Deconfinement
Strange matter
Quark
topic Física
Particle physics
Physics
Quark star
Nuclear matter
Isospin
Quark–gluon plasma
Center (category theory)
Deconfinement
Strange matter
Quark
dc.description.none.fl_txt_mv We present a hybrid equation of state (EoS) for dense matter in which a nuclear matter phase is described within the Dirac-Brueckner-Hartree-Fock (DBHF) approach and a two-flavor quark matter phase is modelled according to a recently developed covariant, nonlocal chiral quark model. We show that modern observational constraints for compact star masses (M~2M⊙) can be satisfied when a small vector-like four quark interaction is taken into account. The corresponding isospin symmetric EoS is consistent with flow data analyses of heavy ion collisions and points to a deconfinement transition at about 0.55 fm⁻³.
Instituto de Física La Plata
description We present a hybrid equation of state (EoS) for dense matter in which a nuclear matter phase is described within the Dirac-Brueckner-Hartree-Fock (DBHF) approach and a two-flavor quark matter phase is modelled according to a recently developed covariant, nonlocal chiral quark model. We show that modern observational constraints for compact star masses (M~2M⊙) can be satisfied when a small vector-like four quark interaction is taken into account. The corresponding isospin symmetric EoS is consistent with flow data analyses of heavy ion collisions and points to a deconfinement transition at about 0.55 fm⁻³.
publishDate 2007
dc.date.none.fl_str_mv 2007-06-14
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/10915/126471
url http://sedici.unlp.edu.ar/handle/10915/126471
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0556-2813
info:eu-repo/semantics/altIdentifier/issn/1089-490X
info:eu-repo/semantics/altIdentifier/arxiv/nucl-th/0703088
info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevc.75.065804
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 13.22299

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