Duality Invariance of the Hawking Temperature and Entropy
arXiv:hep-th/9308077 · doi:10.1103/PhysRevD.49.590
Abstract
We consider solutions to low energy string theory which have a horizon and a spacelike symmetry. Each of these solutions has a geometrically different dual description. We show that the dual solution has a horizon with exactly the same Hawking temperature (surface gravity) and entropy (area) as the original solution.
10 pages, harvmac, NSF-ITP-93-89