Chiral symmetry in linear Sigma model in magnetic environment

Abstract

We study the chiral symmetry structure in a linear sigma model with fermions in the presence of an external, uniform magnetic field in the 'effective potential' approach at the one loop level. We also study the chiral phase transition as a function of density in the core of magnetized neutron stars.

Comments: LaTex2e file with six postscript figures. journal ref: Physical Review D 62 (2000) 025022