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Título:	Ferromagnetic instabilities in neutron matter at finite temperature with the Skyrme interaction
Autor/a:	Rios Huguet, Arnau; Polls Martí, Artur; Vidaña Haro, Isaac
Otros autores:	Universitat de Barcelona
Abstract:	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.
Materia(s):	-Estructura nuclear -Astrofísica nuclear -Nuclear structure -Nuclear astrophysics
Derechos:	(c) The American Physical Society, 2005
Tipo de documento:	Artículo Artículo - Versión publicada
Editor:	The American Physical Society
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