Two-dimensional Lattice Gross-Neveu Model with Wilson Fermion Action at   Finite Temperature and Chemical Potential
  We investigate the phase structure of the two-dimensional lattice Gross-Neveu model formulated with the Wilson fermion action to leading order of 1/N expansion. 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. 
Taku Izubuchi, Junichi Noaki and Akira Ukawa