Ferromagnetic instabilities in neutron matter at finite temperature with the Skyrme interaction

The properties of spin-polarized neutron matter are studied at both zero and finite temperature using Skyrme-type interactions. It is shown that the critical density at which ferromagnetism takes place decreases with temperature. This unexpected behavior is associated to an anomalous behavior of the...

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Detalhes bibliográficos
Autores: Rios Huguet, Arnau, Polls Martí, Artur, Vidaña Haro, Isaac
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2005
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/11014
Acesso em linha:https://hdl.handle.net/2445/11014
Access Level:acceso abierto
Palavra-chave:Estructura nuclear
Astrofísica nuclear
Nuclear structure
Nuclear astrophysics
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spelling Ferromagnetic instabilities in neutron matter at finite temperature with the Skyrme interactionRios Huguet, ArnauPolls Martí, ArturVidaña Haro, IsaacEstructura nuclearAstrofísica nuclearNuclear structureNuclear astrophysicsThe properties of spin-polarized neutron matter are studied at both zero and finite temperature using Skyrme-type interactions. It is shown that the critical density at which ferromagnetism takes place decreases with temperature. This unexpected behavior is associated to an anomalous behavior of the entropy that becomes larger for the polarized phase than for the unpolarized one above a certain critical density. This fact is a consequence of the dependence of the entropy on the effective mass of the neutrons with different third spin component. A new constraint on the parameters of the effective Skyrme force is derived if this behavior is to be avoided.The American Physical Society201020102005info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion9 p.application/pdfhttps://hdl.handle.net/2445/11014Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevC.71.055802Physical Review C, 2005, vol. 71, núm. 5, p. 055802-1-055802-9http://dx.doi.org/10.1103/PhysRevC.71.055802(c) The American Physical Society, 2005info:eu-repo/semantics/openAccessoai:recercat.cat:2445/110142026-05-29T05:05:01Z
dc.title.none.fl_str_mv Ferromagnetic instabilities in neutron matter at finite temperature with the Skyrme interaction
title Ferromagnetic instabilities in neutron matter at finite temperature with the Skyrme interaction
spellingShingle Ferromagnetic instabilities in neutron matter at finite temperature with the Skyrme interaction
Rios Huguet, Arnau
Estructura nuclear
Astrofísica nuclear
Nuclear structure
Nuclear astrophysics
title_short Ferromagnetic instabilities in neutron matter at finite temperature with the Skyrme interaction
title_full Ferromagnetic instabilities in neutron matter at finite temperature with the Skyrme interaction
title_fullStr Ferromagnetic instabilities in neutron matter at finite temperature with the Skyrme interaction
title_full_unstemmed Ferromagnetic instabilities in neutron matter at finite temperature with the Skyrme interaction
title_sort Ferromagnetic instabilities in neutron matter at finite temperature with the Skyrme interaction
dc.creator.none.fl_str_mv Rios Huguet, Arnau
Polls Martí, Artur
Vidaña Haro, Isaac
author Rios Huguet, Arnau
author_facet Rios Huguet, Arnau
Polls Martí, Artur
Vidaña Haro, Isaac
author_role author
author2 Polls Martí, Artur
Vidaña Haro, Isaac
author2_role author
author
dc.subject.none.fl_str_mv Estructura nuclear
Astrofísica nuclear
Nuclear structure
Nuclear astrophysics
topic Estructura nuclear
Astrofísica nuclear
Nuclear structure
Nuclear astrophysics
description The properties of spin-polarized neutron matter are studied at both zero and finite temperature using Skyrme-type interactions. It is shown that the critical density at which ferromagnetism takes place decreases with temperature. This unexpected behavior is associated to an anomalous behavior of the entropy that becomes larger for the polarized phase than for the unpolarized one above a certain critical density. This fact is a consequence of the dependence of the entropy on the effective mass of the neutrons with different third spin component. A new constraint on the parameters of the effective Skyrme force is derived if this behavior is to be avoided.
publishDate 2005
dc.date.none.fl_str_mv 2005
2010
2010
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/11014
url https://hdl.handle.net/2445/11014
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevC.71.055802
Physical Review C, 2005, vol. 71, núm. 5, p. 055802-1-055802-9
http://dx.doi.org/10.1103/PhysRevC.71.055802
dc.rights.none.fl_str_mv (c) The American Physical Society, 2005
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) The American Physical Society, 2005
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 9 p.
application/pdf
dc.publisher.none.fl_str_mv The American Physical Society
publisher.none.fl_str_mv The American Physical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Física Quàntica i Astrofísica)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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