On the Perturbations of StringTheoretic Black Holes
Abstract
The perturbations of stringtheoretic black holes are analyzed by generalizing the method of Chandrasekhar. Attention is focussed on the case of the recently considered charged stringtheoretic black hole solutions as a representative example. It is shown that stringintrinsic effects greatly alter the perturbed motions of the stringtheoretic black holes as compared to the perturbed motions of black hole solutions of the field equations of general relativity, the consequences of which bear on the questions of the scattering behavior and the stability of stringtheoretic black holes. The explicit forms of the axial potential barriers surrounding the stringtheoretic black hole are derived. It is demonstrated that one of these, for sufficiently negative values of the asymptotic value of the dilaton field, will inevitably become negative in turn, in marked contrast to the potentials surrounding the static black holes of general relativity. Such potentials may in principle be used in some cases to obtain approximate constraints on the value of the string coupling constant. The application of the perturbation analysis to the case of twodimensional stringtheoretic black holes is discussed.
 Publication:

arXiv eprints
 Pub Date:
 August 1991
 arXiv:
 arXiv:hepth/9108012
 Bibcode:
 1991hep.th....8012G
 Keywords:

 High Energy Physics  Theory
 EPrint:
 37 pages. This version of the paper is revised in the sense that typos in the original release have been corrected. It is otherwise unchanged. Auhtor email gng@umdhep.umd.edu