Internal structure of Einstein-Yang-Mills-Dilaton black holes

Abstract

We study the interior structure of the Einstein-Yang-Mills-Dilaton black holes as a function of the dilaton coupling constant $\gamma \in [0,1]$. For $\gamma \ne 0$ the solutions have no internal Cauchy horizons and the field amplitudes follow a power law behavior near the singularity. As $\gamma$ decreases, the solutions develop more and more oscillation cycles in the interior region, whose number becomes infinite in the limit $\gamma \to 0$.

6 pages, LaTeX, 4 eps figures, Talk given at the International Workshop on the Internal Structure of Black Holes and Spacetime Singularities, Haifa, Israel, June 29 - July 3, 1997