Neutron matter instabilities induced by strong magnetic fields
- Autores
- Aguirre, Ricardo; 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 (0
0≦3), magnetic field intensity (1014 G≦B<1019 G) 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.
Facultad de Ciencias Exactas - Materia
-
Física
Magnetic instability
Neutron matter - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/85474
Ver los metadatos del registro completo
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Neutron matter instabilities induced by strong magnetic fieldsAguirre, RicardoBauer, EduardoFísicaMagnetic instabilityNeutron matterWe 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/n<sub>0</sub>≦3), magnetic field intensity (10<sup>14</sup> G≦B<10<sup>19</sup> G) 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.Facultad de Ciencias Exactas2013info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf136-140http://sedici.unlp.edu.ar/handle/10915/85474enginfo:eu-repo/semantics/altIdentifier/issn/0370-2693info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2013.02.046info: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:UNLP2025-10-22T16:57:22Zoai:sedici.unlp.edu.ar:10915/85474Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 16:57:22.753SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| 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 Física Magnetic instability Neutron matter |
| 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 Bauer, Eduardo |
| author |
Aguirre, Ricardo |
| author_facet |
Aguirre, Ricardo Bauer, Eduardo |
| author_role |
author |
| author2 |
Bauer, Eduardo |
| author2_role |
author |
| dc.subject.none.fl_str_mv |
Física Magnetic instability Neutron matter |
| topic |
Física Magnetic instability Neutron matter |
| 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/n<sub>0</sub>≦3), magnetic field intensity (10<sup>14</sup> G≦B<10<sup>19</sup> G) 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. Facultad de Ciencias Exactas |
| 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/n<sub>0</sub>≦3), magnetic field intensity (10<sup>14</sup> G≦B<10<sup>19</sup> G) 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 |
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http://sedici.unlp.edu.ar/handle/10915/85474 |
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eng |
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eng |
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