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dc.contributor.author
de Carvalho, S. M.
dc.contributor.author
Negreiros, R.
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Orsaria, Milva Gabriela
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Contrera, Gustavo Aníbal Gabriel
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Weber, Fridolin
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Spinella, W.
dc.date.available
2019-06-12T20:25:41Z
dc.date.issued
2015-09
dc.identifier.citation
de Carvalho, S. M.; Negreiros, R.; Orsaria, Milva Gabriela; Contrera, Gustavo Aníbal Gabriel; Weber, Fridolin; et al.; Thermal evolution of hybrid stars within the framework of a nonlocal Nambu-Jona-Lasinio model; American Physical Society; Physical Review C: Nuclear Physics; 92; 0358; 9-2015; 358101-358109
dc.identifier.issn
0556-2813
dc.identifier.uri
http://hdl.handle.net/11336/78142
dc.description.abstract
We study the thermal evolution of neutron stars containing deconfined quark matter in their core. Such objects are generally referred to as quark-hybrid stars. The confined hadronic matter in their core is described in the framework of nonlinear relativistic nuclear field theory. For the quark phase we use a nonlocal extension of the SU(3) Nambu-Jona-Lasinio model with vector interactions. The Gibbs condition is used to model phase equilibrium between confined hadronic matter and deconfined quark matter. Our study indicates that high-mass neutron stars may contain between 35 and 40% deconfined quark-hybrid matter in their cores. Neutron stars with canonical masses of around 1.4M⊙ would not contain deconfined quark matter. The central proton fractions of the stars are found to be high, enabling them to cool rapidly. Very good agreement with the temperature evolution established for the neutron star in Cassiopeia A (Cas A) is obtained for one of our models (based on the popular NL3 nuclear parametrization), if the protons in the core of our stellar models are strongly paired, the repulsion among the quarks is mildly repulsive, and the mass of Cas A has a canonical value of 1.4M⊙.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Physical Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
Thermal Evolution
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Hybrid Stars
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Hadron Models
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Quark Effective Models
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Thermal evolution of hybrid stars within the framework of a nonlocal Nambu-Jona-Lasinio model
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-05-23T19:11:17Z
dc.journal.volume
92
dc.journal.number
0358
dc.journal.pagination
358101-358109
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Nueva York
dc.description.fil
Fil: de Carvalho, S. M.. Centro Brasileiro de Pesquisas Físicas; Brasil. Universidade Federal Fluminense; Brasil
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Fil: Negreiros, R.. Universidade Federal Fluminense; Brasil
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Fil: Orsaria, Milva Gabriela. 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
dc.description.fil
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
dc.description.fil
Fil: Weber, Fridolin. San Diego State University; Estados Unidos. University of California; Estados Unidos
dc.description.fil
Fil: Spinella, W.. San Diego State University. Computational Sciences Research Center; Estados Unidos. San Diego State University. Department of Physics; Argentina
dc.journal.title
Physical Review C: Nuclear Physics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://journals.aps.org/prc/abstract/10.1103/PhysRevC.92.035810
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info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevC.92.035810
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info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1601.02938
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