Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/95848
DC FieldValueLanguage
dc.contributor.authorFerreira, Márcio-
dc.contributor.authorPereira, Renan Câmara-
dc.contributor.authorProvidência, Constança-
dc.date.accessioned2021-09-28T16:24:42Z-
dc.date.available2021-09-28T16:24:42Z-
dc.date.issued2021-05-13-
dc.identifier.issn2470-0010pt
dc.identifier.issn2470-0029pt
dc.identifier.urihttps://hdl.handle.net/10316/95848-
dc.description12 pages, 8 figures; matches the published versionpt
dc.description.abstractWe analyze the impact of several multi-quark interaction channels on the properties of hybrid stars. Four and eight vector interactions were included in the $SU(3)$ NJL model to describe the quark matter, and all vector like interactions were investigated. The hybrid stars were built starting from an hadronic EoS that satisfy presently accepted nuclear matter properties and considering the quark model constrained by the vacuum properties of several light mesons. The interplay between the 8-quark vector interaction and the 4-quark isovector-vector interaction determine the size of the quark core and its strangeness content. The inclusion of a isovector-vector interaction is essential to obtain large $s$-quark contents and a smaller central speed of sound, although this interaction pushes the onset of quarks to larger densities. It is observed that low mass stars, with a mass below 1.4$M_\odot$, may contain a quark core but with small strangeness content. It is shown that the presently existing mass and tidal deformability constraints from NS observations allow for the existence of hybrid stars with a large strangeness content and large quark cores for binary mass ratios $q=M_2/M_1\gtrsim 0.85$.pt
dc.language.isoengpt
dc.publisherAmerican Physical Societypt
dc.relationPD/BD/128234/2016pt
dc.relationPOCI-01-0145-FEDER-029912pt
dc.relationUID/04564/2020pt
dc.relationUID/FIS/04564/2019pt
dc.rightsopenAccesspt
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt
dc.subjectNuclear Theorypt
dc.subjectHigh Energy Physicspt
dc.subjectPhenomenologypt
dc.titleHybrid stars with large strange quark cores constrained by GW170817pt
dc.typearticle-
degois.publication.issue12pt
degois.publication.titlePhysical Review Dpt
dc.relation.publisherversionhttps://journals.aps.org/prd/pdf/10.1103/PhysRevD.103.123020pt
dc.peerreviewedyespt
dc.identifier.doi10.1103/PhysRevD.103.123020pt
degois.publication.volume103pt
dc.date.embargo2021-05-13*
uc.date.periodoEmbargo0pt
item.openairetypearticle-
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.grantfulltextopen-
item.fulltextCom Texto completo-
crisitem.author.researchunitCFisUC – Center for Physics of the University of Coimbra-
crisitem.author.orcid0000-0001-6464-8023-
Appears in Collections:I&D CFis - Artigos em Revistas Internacionais
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