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arXiv · hep-th/9401158

Vertex Operators of SL(2,R) Black Hole and 2-d gravity

M. Alimohammadi·F. Ardalan
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Abstract

By boosting the vertex operators of Witten's $SL(2,R)/U(1)$ black hole, we show that in the region V they lead to the primary fields of $c=1$ matter coupled to gravity at nonzero cosmological constant, while there is no such correspondence in the region I, showing that Witten's black hole corresponds to $2d$ gravity only in a certain region and in a specific limit. By using the free field representation , we will show that the stress tensor of $SL(2,R)$ gauged by its nilpotent subgroup is equivalent to that of the Liouville theory with zero cosmological constant.

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M. Alimohammadi, F. Ardalan. 1994-03-29. Vertex Operators of SL(2,R) Black Hole and 2-d gravity. https://arxiv.org/abs/hep-th/9401158

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