Quantum Rotating Black Holes (Recovering Geometry in a Quantum World)

Abstract

Classical geometries for spherically symmetric systems can be effectively obtained from quantum coherent states for the relevant degrees of freedom. This description replaces the classical singularity of black holes with integrable structures in which tidal forces remain finite, and there is no inner Cauchy horizon. It is then shown how the extension to rotating systems can avoid the classical inner horizon provided the rotation is not ultra-rigid.