Hybrid stars with large strange quark cores constrained by GW170817

Detalhes bibliográficos
Autor(a) principal: Ferreira, Márcio
Data de Publicação: 2021
Outros Autores: Pereira, Renan Câmara, Providência, Constança
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10316/95848
https://doi.org/10.1103/PhysRevD.103.123020
Resumo: 12 pages, 8 figures; matches the published version
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spelling Hybrid stars with large strange quark cores constrained by GW170817Nuclear TheoryHigh Energy PhysicsPhenomenology12 pages, 8 figures; matches the published versionWe 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 $q=M_2/M_1\gtrsim 0.85$.American Physical Society2021-05-13info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/95848http://hdl.handle.net/10316/95848https://doi.org/10.1103/PhysRevD.103.123020eng2470-00102470-0029https://journals.aps.org/prd/pdf/10.1103/PhysRevD.103.123020Ferreira, MárcioPereira, Renan CâmaraProvidência, Constançainfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-05-25T02:47:49Zoai:estudogeral.uc.pt:10316/95848Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:14:15.709326Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Hybrid stars with large strange quark cores constrained by GW170817
title Hybrid stars with large strange quark cores constrained by GW170817
spellingShingle Hybrid stars with large strange quark cores constrained by GW170817
Ferreira, Márcio
Nuclear Theory
High Energy Physics
Phenomenology
title_short Hybrid stars with large strange quark cores constrained by GW170817
title_full Hybrid stars with large strange quark cores constrained by GW170817
title_fullStr Hybrid stars with large strange quark cores constrained by GW170817
title_full_unstemmed Hybrid stars with large strange quark cores constrained by GW170817
title_sort Hybrid stars with large strange quark cores constrained by GW170817
author Ferreira, Márcio
author_facet Ferreira, Márcio
Pereira, Renan Câmara
Providência, Constança
author_role author
author2 Pereira, Renan Câmara
Providência, Constança
author2_role author
author
dc.contributor.author.fl_str_mv Ferreira, Márcio
Pereira, Renan Câmara
Providência, Constança
dc.subject.por.fl_str_mv Nuclear Theory
High Energy Physics
Phenomenology
topic Nuclear Theory
High Energy Physics
Phenomenology
description 12 pages, 8 figures; matches the published version
publishDate 2021
dc.date.none.fl_str_mv 2021-05-13
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10316/95848
http://hdl.handle.net/10316/95848
https://doi.org/10.1103/PhysRevD.103.123020
url http://hdl.handle.net/10316/95848
https://doi.org/10.1103/PhysRevD.103.123020
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2470-0010
2470-0029
https://journals.aps.org/prd/pdf/10.1103/PhysRevD.103.123020
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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