Equivalent models for gauged WZW theory

Details Equivalent models for gauged WZW theory Equivalent models for gauged WZW theory

1993-03-15

arxiv.org/abs/hep-th/9303081v1

Mod.Phys.Lett. A8 (1993) 2471-2480

Physics

High Energy Physics

High Energy Physics - Theory

13pages, KANAZAWA 93-04

Scientific paper

We modify the $SL(2,{\bf R})/U(1)$ WZW theory, which was shown to describe strings in a 2D black hole, to be invariant under chiral $U(1)$ gauge symmetry by introducing a Steukelberg field. We impose several interesting gauge conditions for the chiral $U(1)$ symmetry. In a paticular gauge the theory is found to be reduced to the Liouville theory coupled to the $c=1$ matter perturbed by the so-called black hole mass operator. Also we discuss the physical states in the models briefly.

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