BRST COHOMOLOGY AND VACUUM-STRUCTURE OF 2-DIMENSIONAL CHROMODYNAMICS

Using a formulation of QCD(2) as a perturbed conformally invariant the ory involving fermions, ghosts, as well as positive and negative level Wess-Zumino-Witten fields, we show that the BRST conditions become re strictions on the conformally invariant sector, as described by a G/G topological theory. By solving the corresponding cohomology problem we are led to a finite set of vacua. For G = SU(2) these vacua are two-f old degenerate.