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dc.contributor.author
Aguirre, Ricardo Miguel
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dc.date.available
2023-08-28T14:13:19Z
dc.date.issued
2022-06
dc.identifier.citation
Aguirre, Ricardo Miguel; Hyperons, deconfinement, and the speed of sound in neutron stars; American Physical Society; Physical Review D; 105; 11; 6-2022; 1-14
dc.identifier.issn
2470-0010
dc.identifier.uri
http://hdl.handle.net/11336/209517
dc.description.abstract
The effects on the speed of sound in neutron stars due to the presence of hyperons and a phase transition to deconfined quark matter is investigated. For this purpose a composite description within the covariant field theory is used; it consists of different models for the hadronic and for the unbound quark configurations. A phase transition with continuous and monotonous variation of the equation of state is assumed. The predictions obtained are contrasted with recent observational data on isolated neutron stars as well as on binary systems. Only one candidate is finally obtained from six different descriptions. According to the present calculations, the onset of the hyperons causes the equilibrium speed of sound to exceed the conformal limit. Based on recent works on the propagation of g-modes in neutron stars, different definitions of the speed of sound are considered.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Physical Society
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
HYPERONS
dc.subject
DECONFINEMENT
dc.subject
NEUTRON STAR
dc.subject
SPEED OF SOUND
dc.subject.classification
Física Nuclear
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Hyperons, deconfinement, and the speed of sound in 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
2023-07-07T17:56:30Z
dc.identifier.eissn
2470-0029
dc.journal.volume
105
dc.journal.number
11
dc.journal.pagination
1-14
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Aguirre, Ricardo Miguel. 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
dc.journal.title
Physical Review D
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevD.105.116023
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