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dc.contributor.author
Orsaria, Milva Gabriela
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Rodrigues, H.
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Weber, Fridolin
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Contrera, Gustavo Aníbal Gabriel
dc.date.available
2019-08-05T22:05:25Z
dc.date.issued
2014-01
dc.identifier.citation
Orsaria, Milva Gabriela; Rodrigues, H.; Weber, Fridolin; Contrera, Gustavo Aníbal Gabriel; Quark deconfinement in high-mass neutron stars; American Physical Society; Physical Review C: Nuclear Physics; 89; 1; 1-2014; 15806-15817
dc.identifier.issn
0556-2813
dc.identifier.uri
http://hdl.handle.net/11336/80950
dc.description.abstract
In this paper, we explore whether or not quark deconfinement may occur in high-mass neutron stars such as J1614 - 2230 (1.97±0.04M) and J0348 + 0432 (2.01±0.04M). Our study is based on a nonlocal extension of the SU(3) Nambu-Jona-Lasinio (n3NJL) model with repulsive vector interactions among the quarks. This model goes beyond the frequently used local version of the Nambu-Jona-Lasinio (NJL) model by accounting for several key features of QCD which are not part of the local model. Confined hadronic matter is treated in the framework of nonlinear relativistic mean field theory. We find that both the local as well as the nonlocal NJL model predict the existence of extended regions of mixed quark-hadron (quark-hybrid) matter in high-mass neutron stars with masses of 2.1 to 2.4M. Pure quark matter in the cores of neutron stars is obtained for certain parametrizations of the hadronic lagrangian and choices of the vector repulsion among quarks. The radii of high-mass neutron stars with quark-hybrid matter and/or pure quark matter cores in their centers are found to lie in the canonical range of 12 to 13 km.
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-nc-sa/2.5/ar/
dc.subject
Neutron Stars
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Deconfinement
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Effective Chiral Quark Models
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Pnjl Models
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
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Física de Partículas y Campos
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
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Física Nuclear
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Quark deconfinement in high-mass neutron stars
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-06-19T16:53:33Z
dc.journal.volume
89
dc.journal.number
1
dc.journal.pagination
15806-15817
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Nueva York
dc.description.fil
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. Área Física Teórica; Argentina. San Diego State University; Estados Unidos
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Fil: Rodrigues, H.. Centro Federal de Educaçao Tecnológica; Brasil
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Fil: Weber, Fridolin. San Diego State University; Estados Unidos. University of California at San Diego; Estados Unidos
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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. Área Física Teórica; Argentina
dc.journal.title
Physical Review C: Nuclear Physics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prc/abstract/10.1103/PhysRevC.89.015806
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info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevC.89.015806
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info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1308.1657
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