Spinodal instabilities and the distillation effect in nuclear matter under strong magnetic fields

Details Spinodal instabilities and the distillation effect in nuclear matter under strong magnetic fields Spinodal instabilities and the distillation effect in nuclear matter under strong magnetic fields

2008-10-19

arxiv.org/abs/0810.3395v2

Phys.Rev.C79:015804,2009

Physics

Nuclear Physics

Nuclear Theory

16 pages, 13 figures, 3 tables, revised version submitted to Phys. Rev. C

Scientific paper

10.1103/PhysRevC.79.015804

We study the effect of strong magnetic fields, of the order of $10^{18}$-$10^{19}$ G, on the instability region of nuclear matter at subsaturation densities. Relativistic nuclear models both with constant couplings and with density dependent parameters are considered. It is shown that a strong magnetic field can have large effects on the instability regions giving rise to bands of instability and wider unstable regions. As a consequence we predict larger transition densities at the inner edge of the crust of compact stars with strong magnetic field. The direction of instability gives rise to a very strong distillation effect if the last Landau level is only partially filled. However, for almost completed Landau levels an anti-distillation effect may occur.

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