BLACK-HOLE PHYSICS FROM LIOUVILLE THEORY

In a previous paper it was shown that the quantum consistency conditions for the dilaton-gravity theory of Callan et al., imply that the cosmological constant term undergoes a dilaton dependent renormalization, in such a manner that the theory can be written as a Liouville-like theory. In this paper we discuss the physical interpretation of the solutions of this theory. In particular we demonstrate explicitly how quantum corrections tame the black hole singularity. Finally we discuss Hawking radiation and find that it is asymptotically constant, but the value of the constant depends on an undetermined parameter.