Evaporation of twodimensional black holes
Abstract
An interesting twodimensional model theory has been proposed that allows one to consider blackhole evaporation in the semiclassical approximation. The semiclassical equations will give a singularity where the dilaton field reaches a certain critical value. This singularity will be hidden behind a horizon. As the evaporation proceeds, the dilaton field on the horizon will approach the critical value but the temperature and rate of emission will remain finite. These results indicate either that there is a naked singularity, or (more likely) that the semiclassical approximation breaks down.
 Publication:

Physical Review Letters
 Pub Date:
 July 1992
 DOI:
 10.1103/PhysRevLett.69.406
 arXiv:
 arXiv:hepth/9203052
 Bibcode:
 1992PhRvL..69..406H
 Keywords:

 Black Holes (Astronomy);
 Evaporation;
 Two Dimensional Models;
 Astronomical Models;
 Boundary Conditions;
 Quantum Theory;
 Singularity (Mathematics);
 Astrophysics;
 97.60.Lf;
 04.20.Cv;
 04.60.+n;
 Black holes;
 Fundamental problems and general formalism;
 High Energy Physics  Theory
 EPrint:
 12 pages