A model for non-singular black hole collapse and evaporation

TL;DR

This paper presents a loop quantum gravity-based model for black hole formation and evaporation that avoids singularities by incorporating quantum gravitational effects into a dynamical collapse scenario.

Contribution

It extends previous static models to a dynamic setting using the Vaidya metric, providing a more realistic description of black hole evolution with quantum effects.

Findings

Black hole formation and evaporation are modeled without singularities.

Quantum gravitational stress-energy prevents singularity formation.

The model tracks trapped surface evolution during collapse and evaporation.

Abstract

We study the formation of a black hole and its subsequent evaporation in a model employing a minisuperspace approach to loop quantum gravity. In previous work the static solution was obtained and shown to be singularity-free. Here, we examine the more realistic dynamical case by generalizing the static case with help of the Vaidya metric. We track the formation and evolution of trapped surfaces during collapse and evaporation and examine the buildup of quantum gravitationally caused stress-energy preventing the formation of a singularity.