Hawking Temperature and String Scattering off the 2+1 Black Hole

Abstract

The 2+1 black hole anti de Sitter solution, obtained as a special limit of the conformally exact $SL(2,R)\otimes SO(1,1)/SO(1,1)$ coset WZW model to all orders in 1/k, is investigated with respect to tachyon scattering. We calculate the off-shell reflection and transmission coefficients and we find an expression for the Hawking temperature, which in a certain limit reduces to the statistical result.

12 pages Latex + 2 figures (not included), NBI-HE-94-15

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