HAWKING RADIATION ENTROPY AND HORIZON DIVERGENCES

In this paper we review the problem of divergences in one-loop thermod ynamical quantities for matter fields in thermal equilibrium on a blac k hole background. We discuss a number of results obtained for various thermodynamical quantities. Then we discuss the ansatz called the ''l iteral interpretation'' of the zeroth law of black hole mechanics and try to explain the troubles of the conical defect procedure in light o f this ansatz. Finally, an analysis of the consequences implied by our ansatz on the calculation of the partition function is made.