Conformally Exact Black Hole Perturbed by a Marginal Operator

Abstract

We have examined effective theory induced by gauged WZW models, in which the tachyon field is added as a marginal operator. Due to this operator added, we must further add the higher order corrections, which modifies the original configuration, to make the theory full-conformally invariant. It has been found that 2d is a critical dimension in the sense that the metric obtained from gauged WZW is modified by the tachyon condensation for $d>2$, but not for $d\le 2$.

11 pages Latex, FIT-HE-94-81

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Cited by in corpus (2)

• An infinite number of potentials surrounding 2d black hole
• Behavior of tachyon in string cosmology based on gauged WZW model