Hawking radiation and Hawking flux from spherical reduction

Abstract

Using heat kernel techniques we show that the relation between Hawking temperature and radiation flux known from Einstein gravity in D dimensions can be reproduced from the spherically reduced action. A recent controversy regarding the D=2 anomaly for that case is discussed. The generalized effective Polyakov action in the presence of a dilaton field is presented.

Invited Talk at Parallel Session "Black Hole Thermodynamics" of 9th Marcel Grossmann Conference Rome, 2-8 July 2000, 6 p