Neutron matter under strong magnetic fields: A comparison of models
- Autores
- Aguirre, Ricardo Miguel; Bauer, Eduardo; Vidaña, Isaac
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The equation of state of neutron matter is affected by the presence of a magnetic field due to the intrinsic magnetic moment of the neutron. Here we study the equilibrium configuration of this system for a wide range of densities, temperatures, and magnetic fields. Special attention is paid to the behavior of the isothermal compressibility and the magnetic susceptibility. Our calculation is performed using both microscopic and phenomenological approaches of the neutron matter equation of state, namely the Brueckner-Hartree-Fock (BHF) approach using the Argonne V18 nucleon-nucleon potential supplemented with the Urbana IX three-nucleon force, the effective Skyrme model in a Hartree-Fock description, and the quantum hadrodynamic formulation with a mean-field approximation. All these approaches predict a change from completely spin polarized to partially polarized matter that leads to a continuous equation of state. The compressibility and the magnetic susceptibility show characteristic behaviors which reflect that fact. Thermal effects tend to smear out the sharpness found for these quantities at T = 0. In most cases a thermal increase of ΔT = 10 MeV is enough to hide the signals of the change of polarization. The set of densities and magnetic field intensities for which the system changes it spin polarization is different for each model. However, we found that under the conditions examined in this work there is an overall agreement between the three theoretical descriptions.
Facultad de Ciencias Exactas
Instituto de Física La Plata
Facultad de Ciencias Astronómicas y Geofísicas - Materia
-
Ciencias Exactas
Física
Astronomía
magnetic field
Physics
neutron matter
equilibrium configuration
densities
temperatures
isothermal compressibility
magnetic susceptibility - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/126109
Ver los metadatos del registro completo
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Neutron matter under strong magnetic fields: A comparison of modelsAguirre, Ricardo MiguelBauer, EduardoVidaña, IsaacCiencias ExactasFísicaAstronomíamagnetic fieldPhysicsneutron matterequilibrium configurationdensitiestemperaturesisothermal compressibilitymagnetic susceptibilityThe equation of state of neutron matter is affected by the presence of a magnetic field due to the intrinsic magnetic moment of the neutron. Here we study the equilibrium configuration of this system for a wide range of densities, temperatures, and magnetic fields. Special attention is paid to the behavior of the isothermal compressibility and the magnetic susceptibility. Our calculation is performed using both microscopic and phenomenological approaches of the neutron matter equation of state, namely the Brueckner-Hartree-Fock (BHF) approach using the Argonne V18 nucleon-nucleon potential supplemented with the Urbana IX three-nucleon force, the effective Skyrme model in a Hartree-Fock description, and the quantum hadrodynamic formulation with a mean-field approximation. All these approaches predict a change from completely spin polarized to partially polarized matter that leads to a continuous equation of state. The compressibility and the magnetic susceptibility show characteristic behaviors which reflect that fact. Thermal effects tend to smear out the sharpness found for these quantities at T = 0. In most cases a thermal increase of ΔT = 10 MeV is enough to hide the signals of the change of polarization. The set of densities and magnetic field intensities for which the system changes it spin polarization is different for each model. However, we found that under the conditions examined in this work there is an overall agreement between the three theoretical descriptions.Facultad de Ciencias ExactasInstituto de Física La PlataFacultad de Ciencias Astronómicas y Geofísicas2014-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/126109enginfo:eu-repo/semantics/altIdentifier/issn/0556-2813info:eu-repo/semantics/altIdentifier/issn/1089-490Xinfo:eu-repo/semantics/altIdentifier/arxiv/1312.3280info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevc.89.035809info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:30:17Zoai:sedici.unlp.edu.ar:10915/126109Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:30:18.186SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Neutron matter under strong magnetic fields: A comparison of models |
title |
Neutron matter under strong magnetic fields: A comparison of models |
spellingShingle |
Neutron matter under strong magnetic fields: A comparison of models Aguirre, Ricardo Miguel Ciencias Exactas Física Astronomía magnetic field Physics neutron matter equilibrium configuration densities temperatures isothermal compressibility magnetic susceptibility |
title_short |
Neutron matter under strong magnetic fields: A comparison of models |
title_full |
Neutron matter under strong magnetic fields: A comparison of models |
title_fullStr |
Neutron matter under strong magnetic fields: A comparison of models |
title_full_unstemmed |
Neutron matter under strong magnetic fields: A comparison of models |
title_sort |
Neutron matter under strong magnetic fields: A comparison of models |
dc.creator.none.fl_str_mv |
Aguirre, Ricardo Miguel Bauer, Eduardo Vidaña, Isaac |
author |
Aguirre, Ricardo Miguel |
author_facet |
Aguirre, Ricardo Miguel Bauer, Eduardo Vidaña, Isaac |
author_role |
author |
author2 |
Bauer, Eduardo Vidaña, Isaac |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Ciencias Exactas Física Astronomía magnetic field Physics neutron matter equilibrium configuration densities temperatures isothermal compressibility magnetic susceptibility |
topic |
Ciencias Exactas Física Astronomía magnetic field Physics neutron matter equilibrium configuration densities temperatures isothermal compressibility magnetic susceptibility |
dc.description.none.fl_txt_mv |
The equation of state of neutron matter is affected by the presence of a magnetic field due to the intrinsic magnetic moment of the neutron. Here we study the equilibrium configuration of this system for a wide range of densities, temperatures, and magnetic fields. Special attention is paid to the behavior of the isothermal compressibility and the magnetic susceptibility. Our calculation is performed using both microscopic and phenomenological approaches of the neutron matter equation of state, namely the Brueckner-Hartree-Fock (BHF) approach using the Argonne V18 nucleon-nucleon potential supplemented with the Urbana IX three-nucleon force, the effective Skyrme model in a Hartree-Fock description, and the quantum hadrodynamic formulation with a mean-field approximation. All these approaches predict a change from completely spin polarized to partially polarized matter that leads to a continuous equation of state. The compressibility and the magnetic susceptibility show characteristic behaviors which reflect that fact. Thermal effects tend to smear out the sharpness found for these quantities at T = 0. In most cases a thermal increase of ΔT = 10 MeV is enough to hide the signals of the change of polarization. The set of densities and magnetic field intensities for which the system changes it spin polarization is different for each model. However, we found that under the conditions examined in this work there is an overall agreement between the three theoretical descriptions. Facultad de Ciencias Exactas Instituto de Física La Plata Facultad de Ciencias Astronómicas y Geofísicas |
description |
The equation of state of neutron matter is affected by the presence of a magnetic field due to the intrinsic magnetic moment of the neutron. Here we study the equilibrium configuration of this system for a wide range of densities, temperatures, and magnetic fields. Special attention is paid to the behavior of the isothermal compressibility and the magnetic susceptibility. Our calculation is performed using both microscopic and phenomenological approaches of the neutron matter equation of state, namely the Brueckner-Hartree-Fock (BHF) approach using the Argonne V18 nucleon-nucleon potential supplemented with the Urbana IX three-nucleon force, the effective Skyrme model in a Hartree-Fock description, and the quantum hadrodynamic formulation with a mean-field approximation. All these approaches predict a change from completely spin polarized to partially polarized matter that leads to a continuous equation of state. The compressibility and the magnetic susceptibility show characteristic behaviors which reflect that fact. Thermal effects tend to smear out the sharpness found for these quantities at T = 0. In most cases a thermal increase of ΔT = 10 MeV is enough to hide the signals of the change of polarization. The set of densities and magnetic field intensities for which the system changes it spin polarization is different for each model. However, we found that under the conditions examined in this work there is an overall agreement between the three theoretical descriptions. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-03 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo 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://sedici.unlp.edu.ar/handle/10915/126109 |
url |
http://sedici.unlp.edu.ar/handle/10915/126109 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/0556-2813 info:eu-repo/semantics/altIdentifier/issn/1089-490X info:eu-repo/semantics/altIdentifier/arxiv/1312.3280 info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevc.89.035809 |
dc.rights.none.fl_str_mv |
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openAccess |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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