QUANTUM PROBES OF REPULSIVE SINGULARITIES IN N=2 SUPERGRAVITY

Repulsive singularities ('repulsons') in extended supergravity theorie s are investigated. These repulsive singularities are related to attra ctive singularities ('black holes') in moduli space of extended superg ravity vacua. In order to study these repulsive singularities, a scala r test-particle in the background of a repulson is investigated. It is shown, using a partial wave expansion, that the wavefunction of the s calar particle vanishes at the curvature singularity at the origin. In addition, the connection to higher-dimensional p-brane solutions incl uding anti-branes is discussed.