Publicação
Light hyperclusters and hyperons in low-density hot stellar matter
| Resumo: | The abundance of light nuclei and hyperons, that are produced in stellar environments such as supernova or binary mergers, is calculated within a relativistic mean-field model with density dependent couplings in low-density matter. Five light nuclei are considered, together with three light hyper-nuclei. We show that the presence of hyperons shifts the dissolution of clusters to larger densities, and increases the amount of clusters. This effect is larger the smaller the charge fraction, and the higher the temperature. The abundance of hyperons is also affected by the cluster formation: neutral and positively charged hyperons suffer a reduction, and the negatively charged ones an increase. We also observe that the dissolution of the less-abundant clusters occurs at larger densities due to smaller Pauli-blocking effects. Overall, hyper-nuclei set in at temperatures above 25 MeV, and depending on the temperature and chemical composition, they may be more abundant than $\alpha$-particles, or even more abundant than other heavier clusters. |
|---|---|
| Autores principais: | Custódio, Tiago |
| Outros Autores: | Pais, Helena; Providência, Constança |
| Assunto: | Nuclear Theory astro-ph.HE |
| Ano: | 2021 |
| País: | Portugal |
| Tipo de documento: | preprint |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade de Coimbra |
| Idioma: | inglês |
| Origem: | Estudo Geral - Universidade de Coimbra |
| _version_ | 1868797328447504384 |
|---|---|
| author | Custódio, Tiago |
| author2 | Pais, Helena Providência, Constança |
| author2_role | author author |
| author_facet | Custódio, Tiago Pais, Helena Providência, Constança |
| author_role | author |
| contributor_name_str_mv | Estudo Geral |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Custódio, Tiago\"},{\"Person.name\":\"Pais, Helena\"},{\"Person.name\":\"Providência, Constança\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | Estudo Geral |
| datacite.creators.creator.creatorName.fl_str_mv | Custódio, Tiago Pais, Helena Providência, Constança |
| datacite.date.Accepted.fl_str_mv | 2021-06-23T00:00:00Z |
| datacite.date.available.fl_str_mv | 2021-06-23T00:00:00Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Nuclear Theory astro-ph.HE |
| datacite.titles.title.fl_str_mv | Light hyperclusters and hyperons in low-density hot stellar matter |
| dc.contributor.none.fl_str_mv | Estudo Geral |
| dc.creator.none.fl_str_mv | Custódio, Tiago Pais, Helena Providência, Constança |
| dc.date.Accepted.fl_str_mv | 2021-06-23T00:00:00Z |
| dc.date.available.fl_str_mv | 2021-06-23T00:00:00Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/10316/95926 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | American Physical Society |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | Nuclear Theory astro-ph.HE |
| dc.title.fl_str_mv | Light hyperclusters and hyperons in low-density hot stellar matter |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_816b |
| description | The abundance of light nuclei and hyperons, that are produced in stellar environments such as supernova or binary mergers, is calculated within a relativistic mean-field model with density dependent couplings in low-density matter. Five light nuclei are considered, together with three light hyper-nuclei. We show that the presence of hyperons shifts the dissolution of clusters to larger densities, and increases the amount of clusters. This effect is larger the smaller the charge fraction, and the higher the temperature. The abundance of hyperons is also affected by the cluster formation: neutral and positively charged hyperons suffer a reduction, and the negatively charged ones an increase. We also observe that the dissolution of the less-abundant clusters occurs at larger densities due to smaller Pauli-blocking effects. Overall, hyper-nuclei set in at temperatures above 25 MeV, and depending on the temperature and chemical composition, they may be more abundant than $\alpha$-particles, or even more abundant than other heavier clusters. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | preprint |
| id | estudogl_377ebde9fe77eeb997e61ef080c19ce9 |
| identifier.url.fl_str_mv | https://hdl.handle.net/10316/95926 |
| instacron_str | uc |
| institution | Universidade de Coimbra |
| instname_str | Universidade de Coimbra |
| language | eng |
| network_acronym_str | estudogl |
| network_name_str | Estudo Geral - Universidade de Coimbra |
| oai_identifier_str | oai:estudogeral.uc.pt:10316/95926 |
| organization_str_mv | urn:organizationAcronym:uc |
| person_str_mv | Custódio, Tiago Pais, Helena Providência, Constança |
| publishDate | 2021 |
| publisher.none.fl_str_mv | American Physical Society |
| reponame_str | Estudo Geral - Universidade de Coimbra |
| repository_id_str | urn:repositoryAcronym:estudogl |
| service_str_mv | urn:repositoryAcronym:estudogl |
| spelling | engAmerican Physical SocietyengThe abundance of light nuclei and hyperons, that are produced in stellar environments such as supernova or binary mergers, is calculated within a relativistic mean-field model with density dependent couplings in low-density matter. Five light nuclei are considered, together with three light hyper-nuclei. We show that the presence of hyperons shifts the dissolution of clusters to larger densities, and increases the amount of clusters. This effect is larger the smaller the charge fraction, and the higher the temperature. The abundance of hyperons is also affected by the cluster formation: neutral and positively charged hyperons suffer a reduction, and the negatively charged ones an increase. We also observe that the dissolution of the less-abundant clusters occurs at larger densities due to smaller Pauli-blocking effects. Overall, hyper-nuclei set in at temperatures above 25 MeV, and depending on the temperature and chemical composition, they may be more abundant than $\alpha$-particles, or even more abundant than other heavier clusters.application/pdfptLight hyperclusters and hyperons in low-density hot stellar matterCustódio, TiagoPais, HelenaProvidência, ConstançaHostingInstitutionOrganizationalEstudo Gerale-mailmailto:inf@sib.uc.ptinf@sib.uc.ptISSNIsPartOf2469-9985ISSNIsPartOf2469-9993DOIIsPartOfhttp://arxiv.org/abs/2106.12245v1DOIIsPartOfhttp://arxiv.org/abs/2106.12245v1DOIIsPartOf10.1103/PhysRevC.104.035801DOIIsPartOfhttp://arxiv.org/abs/2106.12245v12021-06-232021-06-23T00:00:00Z2021-06-23T00:00:00ZHandlehttps://hdl.handle.net/10316/95926http://purl.org/coar/access_right/c_abf2open accessNuclear Theoryastro-ph.HE1088391 bytesother research producthttp://purl.org/coar/resource_type/c_816bpreprintapplication/pdfhttps://estudogeral.uc.pt/bitstream/10316/95926/1/2106.12245.pdf |
| spellingShingle | Light hyperclusters and hyperons in low-density hot stellar matter Custódio, Tiago Nuclear Theory astro-ph.HE |
| status | SINGLETON |
| subject.fl_str_mv | Nuclear Theory astro-ph.HE |
| title | Light hyperclusters and hyperons in low-density hot stellar matter |
| title_full | Light hyperclusters and hyperons in low-density hot stellar matter |
| title_fullStr | Light hyperclusters and hyperons in low-density hot stellar matter |
| title_full_unstemmed | Light hyperclusters and hyperons in low-density hot stellar matter |
| title_short | Light hyperclusters and hyperons in low-density hot stellar matter |
| title_sort | Light hyperclusters and hyperons in low-density hot stellar matter |
| topic | Nuclear Theory astro-ph.HE |
| topic_facet | Nuclear Theory astro-ph.HE |
| url | https://hdl.handle.net/10316/95926 |
| visible | 1 |