Eur. Phys. J. A (2010) 44: 77-80
https://doi.org/10.1140/epja/i2010-10927-9

Regular Article - Theoretical Physics

Neutrino mean free paths in spin-polarized neutron Fermi liquids

Department of Fundamental Physics and IUFFyM, University of Salamanca, Plaza de la Merced s/n, 37008, Salamanca, Spain

Received: 10 December 2009
Revised: 20 January 2010
Accepted: 22 January 2010
Published online: 23 February 2010

Abstract

Neutrino mean free paths in magnetized neutron matter are calculated using the Hartree-Fock approximation with effective Skyrme and Gogny forces in the framework of the Landau Fermi liquid theory. It is shown that describing nuclear interaction with Skyrme forces and for magnetic field strengths log₁₀ B(G) ≳ 17 , the neutrino mean free paths stay almost unchanged at intermediate densities but they largely increase at high densities when they are compared to the field-free case results. However, the description with Gogny forces differs from the previous and mean free paths stay almonst unchanged or decrease at densities [1-2] . This different behaviour can be explained due to the combination of the common mild variation of the Landau parameters with both types of forces and the values of the nucleon effective mass and induced magnetization of matter under the presence of a strong magnetic field as described with the two parametrizations of the nuclear interaction.