Two-dimensional lattice Gross-Neveu model with Wilson fermion action at finite temperature and chemical potential

Abstract

We investigate the phase structure of the two-dimensional lattice Gross-Neveu model formulated with the Wilson fermion action to leading order of (Formula presented) expansion. The structural change of the parity-broken phase under the influence of finite temperature and chemical potential is studied. The connection between the lattice phase structure and the chiral phase transition of the continuum theory is clarified. © 1998 The American Physical Society.