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arXiv · hep-th/9507114

BRST Cohomology and Vacuum Structure of Two-Dimensional Chromodynamics

E. Abdalla·K. D. Rothe
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Abstract

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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E. Abdalla, K. D. Rothe. 1995-07-21. BRST Cohomology and Vacuum Structure of Two-Dimensional Chromodynamics. https://doi.org/10.1016/0370-2693(95)01193-t

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