Quark-hybrid matter in the cores of massive neutron stars

Autores
Orsaria, Milva Gabriela; Rodrigues, H.; Fridolin, Weber; Contrera, Gustavo Aníbal Gabriel
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Using a nonlocal extension of the SU(3) Nambu-Jona-Lasinio model, which reproduces several of the key features of quantum chromodynamics, we show that mixed phases of deconfined quarks and confined hadrons (quark-hybrid matter) may exist in the cores of neutron stars as massive as around 2.1M ⊙. The radii of these objects are found to be in the canonical range of ∼12-13 km. According to our study, the transition to pure quark matter does not occur in stable neutron stars, but is shifted to neutron stars which are unstable against radial oscillations. The implications of our study for the recently discovered, massive neutron star PSR J1614-2230, whose gravitational mass is 1.97±0.04M⊙, are that this neutron star may contain an extended region of quark-hybrid matter at it center, but no pure quark matter.
Fil: Orsaria, Milva Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. San Diego State University; Estados Unidos. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Rodrigues, H.. Centro Federal de Educação Tecnológica; Brasil. San Diego State University; Estados Unidos
Fil: Fridolin, Weber. San Diego State University; Estados Unidos
Fil: Contrera, Gustavo Aníbal Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Materia
HYBRID STARS
NON LOCAL PNJL MODEL
QCD PHASE TRANSITIONS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/77263
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Quark-hybrid matter in the cores of massive neutron starsOrsaria, Milva GabrielaRodrigues, H.Fridolin, WeberContrera, Gustavo Aníbal GabrielHYBRID STARSNON LOCAL PNJL MODELQCD PHASE TRANSITIONShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Using a nonlocal extension of the SU(3) Nambu-Jona-Lasinio model, which reproduces several of the key features of quantum chromodynamics, we show that mixed phases of deconfined quarks and confined hadrons (quark-hybrid matter) may exist in the cores of neutron stars as massive as around 2.1M ⊙. The radii of these objects are found to be in the canonical range of ∼12-13 km. According to our study, the transition to pure quark matter does not occur in stable neutron stars, but is shifted to neutron stars which are unstable against radial oscillations. The implications of our study for the recently discovered, massive neutron star PSR J1614-2230, whose gravitational mass is 1.97±0.04M⊙, are that this neutron star may contain an extended region of quark-hybrid matter at it center, but no pure quark matter.Fil: Orsaria, Milva Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. San Diego State University; Estados Unidos. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Rodrigues, H.. Centro Federal de Educação Tecnológica; Brasil. San Diego State University; Estados UnidosFil: Fridolin, Weber. San Diego State University; Estados UnidosFil: Contrera, Gustavo Aníbal Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaAmerican Physical Society2013-01info: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/11336/77263Orsaria, Milva Gabriela; Rodrigues, H.; Fridolin, Weber; Contrera, Gustavo Aníbal Gabriel; Quark-hybrid matter in the cores of massive neutron stars; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; 87; 2; 1-2013; 230011-2300161550-7998CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://link.aps.org/doi/10.1103/PhysRevD.87.023001info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.87.023001info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:10:38Zoai:ri.conicet.gov.ar:11336/77263instacron: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:34982025-10-22 11:10:38.444CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Quark-hybrid matter in the cores of massive neutron stars
title Quark-hybrid matter in the cores of massive neutron stars
spellingShingle Quark-hybrid matter in the cores of massive neutron stars
Orsaria, Milva Gabriela
HYBRID STARS
NON LOCAL PNJL MODEL
QCD PHASE TRANSITIONS
title_short Quark-hybrid matter in the cores of massive neutron stars
title_full Quark-hybrid matter in the cores of massive neutron stars
title_fullStr Quark-hybrid matter in the cores of massive neutron stars
title_full_unstemmed Quark-hybrid matter in the cores of massive neutron stars
title_sort Quark-hybrid matter in the cores of massive neutron stars
dc.creator.none.fl_str_mv Orsaria, Milva Gabriela
Rodrigues, H.
Fridolin, Weber
Contrera, Gustavo Aníbal Gabriel
author Orsaria, Milva Gabriela
author_facet Orsaria, Milva Gabriela
Rodrigues, H.
Fridolin, Weber
Contrera, Gustavo Aníbal Gabriel
author_role author
author2 Rodrigues, H.
Fridolin, Weber
Contrera, Gustavo Aníbal Gabriel
author2_role author
author
author
dc.subject.none.fl_str_mv HYBRID STARS
NON LOCAL PNJL MODEL
QCD PHASE TRANSITIONS
topic HYBRID STARS
NON LOCAL PNJL MODEL
QCD PHASE TRANSITIONS
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
dc.description.none.fl_txt_mv Using a nonlocal extension of the SU(3) Nambu-Jona-Lasinio model, which reproduces several of the key features of quantum chromodynamics, we show that mixed phases of deconfined quarks and confined hadrons (quark-hybrid matter) may exist in the cores of neutron stars as massive as around 2.1M ⊙. The radii of these objects are found to be in the canonical range of ∼12-13 km. According to our study, the transition to pure quark matter does not occur in stable neutron stars, but is shifted to neutron stars which are unstable against radial oscillations. The implications of our study for the recently discovered, massive neutron star PSR J1614-2230, whose gravitational mass is 1.97±0.04M⊙, are that this neutron star may contain an extended region of quark-hybrid matter at it center, but no pure quark matter.
Fil: Orsaria, Milva Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. San Diego State University; Estados Unidos. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Rodrigues, H.. Centro Federal de Educação Tecnológica; Brasil. San Diego State University; Estados Unidos
Fil: Fridolin, Weber. San Diego State University; Estados Unidos
Fil: Contrera, Gustavo Aníbal Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
description Using a nonlocal extension of the SU(3) Nambu-Jona-Lasinio model, which reproduces several of the key features of quantum chromodynamics, we show that mixed phases of deconfined quarks and confined hadrons (quark-hybrid matter) may exist in the cores of neutron stars as massive as around 2.1M ⊙. The radii of these objects are found to be in the canonical range of ∼12-13 km. According to our study, the transition to pure quark matter does not occur in stable neutron stars, but is shifted to neutron stars which are unstable against radial oscillations. The implications of our study for the recently discovered, massive neutron star PSR J1614-2230, whose gravitational mass is 1.97±0.04M⊙, are that this neutron star may contain an extended region of quark-hybrid matter at it center, but no pure quark matter.
publishDate 2013
dc.date.none.fl_str_mv 2013-01
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/11336/77263
Orsaria, Milva Gabriela; Rodrigues, H.; Fridolin, Weber; Contrera, Gustavo Aníbal Gabriel; Quark-hybrid matter in the cores of massive neutron stars; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; 87; 2; 1-2013; 230011-230016
1550-7998
CONICET Digital
CONICET
url http://hdl.handle.net/11336/77263
identifier_str_mv Orsaria, Milva Gabriela; Rodrigues, H.; Fridolin, Weber; Contrera, Gustavo Aníbal Gabriel; Quark-hybrid matter in the cores of massive neutron stars; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; 87; 2; 1-2013; 230011-230016
1550-7998
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://link.aps.org/doi/10.1103/PhysRevD.87.023001
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.87.023001
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/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 12.982451

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