The phases of two-dimensional QED and QCD

Details The phases of two-dimensional QED and QCD The phases of two-dimensional QED and QCD

1997-05-30

arxiv.org/abs/hep-th/9705243v1

Physics

High Energy Physics

High Energy Physics - Theory

Latex file, 11 pages. Talk presented at the 1st Caribean workshop on quantum mechanics, particles and fields, Havana, Cuba 24-

Scientific paper

The semi-classical phase structure of two-dimensional QED and QCD are briefly reviewed. The non-abelian theory is reformulated to closely resemble the Schwinger model. It is shown that, contrary to the abelian theory, the phase structure of two-dimensional QCD is unaffected by the structure of the theta vacuum. We make parallel calculations in the two theories and conclude that massless Schwinger model is in the screening and the massive theory is in the confining phase, whereas both massless and massive QCD are in the screening phase.

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