  Black hole spacetimes can arise when a Liouville field is coupled to two-
dimensional gravity. Exact solutions are obtained both classically and when
quantum corrections due to back reaction effects are included. The black hole
temperature depends upon the mass and the thermodynamic limit breaks down
before evaporation of the black hole is complete, indicating that higher-loop
effects must be included for a full description of the process.

General Relativity and Quantum Cosmology