BRST Cohomology and Vacuum Structure of Two-Dimensional Chromodynamics

Details BRST Cohomology and Vacuum Structure of Two-Dimensional Chromodynamics BRST Cohomology and Vacuum Structure of Two-Dimensional Chromodynamics

1995-07-21

arxiv.org/abs/hep-th/9507114v1

Phys.Lett. B363 (1995) 85-92

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, LaTeX

Scientific paper

10.1016/0370-2693(95)01193-T

Using a formulation of QCD_2 as a perturbed conformally invariant theory involving fermions, ghosts, as well as positive and negative level Wess-Zumino-Witten fields, we show that the BRST conditions become restrictions 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-fold degenerate.

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