Neutron matter instabilities induced by strong magnetic fields

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...

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Detalles Bibliográficos
Autores principales: Aguirre, Ricardo, Bauer, Eduardo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2013
Materias:
Física
Magnetic instability
Neutron matter
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85474
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-85474
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Magnetic instability
Neutron matter
spellingShingle Física
Magnetic instability
Neutron matter
Aguirre, Ricardo
Bauer, Eduardo
Neutron matter instabilities induced by strong magnetic fields
topic_facet Física
Magnetic instability
Neutron matter
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.
format Articulo
Articulo
author Aguirre, Ricardo
Bauer, Eduardo
author_facet Aguirre, Ricardo
Bauer, Eduardo
author_sort Aguirre, Ricardo
title Neutron matter instabilities induced by strong magnetic fields
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
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/85474
work_keys_str_mv AT aguirrericardo neutronmatterinstabilitiesinducedbystrongmagneticfields
AT bauereduardo neutronmatterinstabilitiesinducedbystrongmagneticfields
bdutipo_str Repositorios
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