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arXiv · hep-th/9303081

Equivalent models for gauged WZW theory

Haruhiko Terao·Kiyonori Yamada
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Abstract

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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Haruhiko Terao, Kiyonori Yamada. 1993-03-15. Equivalent models for gauged WZW theory. https://doi.org/10.1142/s0217732393002798

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