FINITE-TEMPERATURE PHASE-STRUCTURE OF LATTICE QCD WITH THE WILSON QUARK ACTION FOR 2 AND 4 FLAVORS

We present further analyses of the finite-temperature phase structure of lattice QCD with the Wilson quark action based on spontaneous break down of parity-flavor symmetry. Results are reported on (i) an explici t demonstration of spontaneous breakdown of parity-flavor symmetry bey ond the critical Line, (ii) phase structure and order of chiral transi tion for the case of N-f = 4 flavors, and (iii) approach toward the co ntinuum limit.