Neutron matter instabilities induced by strong magnetic fields

Autores
Aguirre, Ricardo Miguel; Bauer, Eduardo
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study some properties of spin-polarized neutron matter in the presence of a strong magnetic field at finite temperature. Using the Skyrme model together with the Hartree–Fock approximation we obtain an energy density functional that is employed to extract the spin polarization, the effective mass and the magnetic free energy of the system. In order to find the equilibrium state, we have analyzed different global spin configurations over a wide range of matter density (0Fil: 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. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; Argentina
Fil: Bauer, Eduardo. 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. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; Argentina
Materia
Neutron matter
Magnetic instability
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/23398
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Neutron matter instabilities induced by strong magnetic fieldsAguirre, Ricardo MiguelBauer, EduardoNeutron matterMagnetic instabilityhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We study some properties of spin-polarized neutron matter in the presence of a strong magnetic field at finite temperature. Using the Skyrme model together with the Hartree–Fock approximation we obtain an energy density functional that is employed to extract the spin polarization, the effective mass and the magnetic free energy of the system. In order to find the equilibrium state, we have analyzed different global spin configurations over a wide range of matter density (0<n/n0⩽3), magnetic field intensity (1014G⩽B<1019G) and temperature (T⩽80MeV). The outcome is that the system can be either completely spin-down polarized or partially polarized. A change in any of the (n,T,B)-variables can induce a transition from one polarization state to the other. The transition takes place in a surface in the (n,T,B)-phase space, which represents an instability of the system. We have also found a discontinuity in the internal energy associated with this change in the state of magnetization.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. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; ArgentinaFil: Bauer, Eduardo. 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. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; ArgentinaElsevier2013-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/23398Aguirre, Ricardo Miguel; Bauer, Eduardo; Neutron matter instabilities induced by strong magnetic fields; Elsevier; Physics Letters B; 721; 1-3; 3-2013; 136-1400370-2693CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0370269313001895info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2013.02.046info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:36:21Zoai:ri.conicet.gov.ar:11336/23398instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:36:21.741CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Neutron matter instabilities induced by strong magnetic fields
title Neutron matter instabilities induced by strong magnetic fields
spellingShingle Neutron matter instabilities induced by strong magnetic fields
Aguirre, Ricardo Miguel
Neutron matter
Magnetic instability
title_short Neutron matter instabilities induced by strong magnetic fields
title_full Neutron matter instabilities induced by strong magnetic fields
title_fullStr Neutron matter instabilities induced by strong magnetic fields
title_full_unstemmed Neutron matter instabilities induced by strong magnetic fields
title_sort Neutron matter instabilities induced by strong magnetic fields
dc.creator.none.fl_str_mv Aguirre, Ricardo Miguel
Bauer, Eduardo
author Aguirre, Ricardo Miguel
author_facet Aguirre, Ricardo Miguel
Bauer, Eduardo
author_role author
author2 Bauer, Eduardo
author2_role author
dc.subject.none.fl_str_mv Neutron matter
Magnetic instability
topic Neutron matter
Magnetic instability
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We study some properties of spin-polarized neutron matter in the presence of a strong magnetic field at finite temperature. Using the Skyrme model together with the Hartree–Fock approximation we obtain an energy density functional that is employed to extract the spin polarization, the effective mass and the magnetic free energy of the system. In order to find the equilibrium state, we have analyzed different global spin configurations over a wide range of matter density (0<n/n0⩽3), magnetic field intensity (1014G⩽B<1019G) and temperature (T⩽80MeV). The outcome is that the system can be either completely spin-down polarized or partially polarized. A change in any of the (n,T,B)-variables can induce a transition from one polarization state to the other. The transition takes place in a surface in the (n,T,B)-phase space, which represents an instability of the system. We have also found a discontinuity in the internal energy associated with this change in the state of magnetization.
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. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; Argentina
Fil: Bauer, Eduardo. 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. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; Argentina
description We study some properties of spin-polarized neutron matter in the presence of a strong magnetic field at finite temperature. Using the Skyrme model together with the Hartree–Fock approximation we obtain an energy density functional that is employed to extract the spin polarization, the effective mass and the magnetic free energy of the system. In order to find the equilibrium state, we have analyzed different global spin configurations over a wide range of matter density (0<n/n0⩽3), magnetic field intensity (1014G⩽B<1019G) and temperature (T⩽80MeV). The outcome is that the system can be either completely spin-down polarized or partially polarized. A change in any of the (n,T,B)-variables can induce a transition from one polarization state to the other. The transition takes place in a surface in the (n,T,B)-phase space, which represents an instability of the system. We have also found a discontinuity in the internal energy associated with this change in the state of magnetization.
publishDate 2013
dc.date.none.fl_str_mv 2013-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/23398
Aguirre, Ricardo Miguel; Bauer, Eduardo; Neutron matter instabilities induced by strong magnetic fields; Elsevier; Physics Letters B; 721; 1-3; 3-2013; 136-140
0370-2693
CONICET Digital
CONICET
url http://hdl.handle.net/11336/23398
identifier_str_mv Aguirre, Ricardo Miguel; Bauer, Eduardo; Neutron matter instabilities induced by strong magnetic fields; Elsevier; Physics Letters B; 721; 1-3; 3-2013; 136-140
0370-2693
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0370269313001895
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2013.02.046
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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