Magnetization of a neutron plasma with Skyrme and Gogny forces in the presence of a strong magnetic field

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dc.creatorPerez-Garcia, M. Angeles
dc.date2008-02-20
dc.date.accessioned2026-07-07T11:40:22Z
dc.date.available2026-07-07T11:40:22Z
dc.descriptionSome thermodynamical magnitudes of interest in a pure neutron plasma are studied within the framework of the non-relativistic Brueckner-Hartree-Fock approximation at finite density and temperature. We use Skyrme and Gogny forces to describe such a neutron plasma and study the main differences that arise in these two effective parametrizations of the nuclear interaction when a strong magnetic field induces a permanent magnetization in the gas. The existence of a non-zero permanent spin polarization in a neutron plasma is explored in the density-temperature parameter space. We find that for moderate temperatures and in the low density range up to densities $\approx 0.5ρ_0$ both parametrizations predict that as density decreases an increasingly strong magnetization is allowed. In the range $0.5 ρ_0 \lesssim ρ\lesssim 3 ρ_0$ there is an approximately constant polarization that can be as big as $\approx 12%$ for the maximum allowed interior magnetic field $B \approx 10^{18}$ G. For higher densities there is a dramatic difference in the polarization trend followed by Skyrme an Gogny forces. While the former predict a ferromagnetic phase transition, the Gogny forces prevent it keeping the magnetization below 5%.
dc.description21 pages, 16 figures, 1 table
dc.identifierhttps://arxiv.org/abs/0802.2911
dc.identifierhttp://arxiv.org/abs/0802.2911
dc.identifierPhys.Rev.C77:065806,2008
dc.identifierdoi:10.1103/PhysRevC.77.065806
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200235
dc.subjectNuclear Theory
dc.subjectAstrophysics
dc.titleMagnetization of a neutron plasma with Skyrme and Gogny forces in the presence of a strong magnetic field
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