Title:
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Ferromagnetic instabilities in neutron matter at finite temperature with the Skyrme interaction
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Author:
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Rios Huguet, Arnau; Polls Martí, Artur; Vidaña Haro, Isaac
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Other authors:
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Universitat de Barcelona |
Abstract:
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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. |
Subject(s):
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-Estructura nuclear -Astrofísica nuclear -Nuclear structure -Nuclear astrophysics |
Rights:
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(c) The American Physical Society, 2005
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Document type:
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Article Article - Published version |
Published by:
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The American Physical Society
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