Model metrics for quantum black hole evolution: Gravitational collapse, singularity resolution, and transient horizons

Abstract

It is widely accepted that curvature singularity resolution should be a feature of quantum gravity. We present a class of time-dependent asymptotically flat spherically symmetric metrics that model gravitational collapse in quantum gravity. The metrics capture intuitions associated with the dynamics of singularity resolution, and horizon formation and evaporation following a matter bounce. A parameter in the metric associated with the speed of the bounce determines black hole lifetime as a power of its mass; this includes the Hawking evaporation time $M^3$.

10 pages, 7 Figures; v2: matches the published PRD version, title changed due to referee's comments, comments added about the energy conditions and surface gravity

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• Dynamical model for black hole to white hole transitions
• Correction to Hawking radiation in non-singular gravitational collapse
• Interior evolution of regular Schwarzschild black holes
• A rotating GUP black hole: metric, shadow, and bounds on quantum parameters
• Gravitational Collapse of an Inhomogeneous Fluid in Rastall Theory