Semi-classical dust collapse and regular black holes

TL;DR

This paper explores semi-classical modifications to gravitational collapse models that prevent singularities, leading to regular black holes or other compact objects, by employing non-linear electrodynamics within General Relativity.

Contribution

It provides a detailed analysis of semi-classical dust collapse models that produce regular black holes, expanding understanding of non-singular gravitational collapse scenarios.

Findings

Semi-classical corrections can prevent singularities in dust collapse.

Regular black holes can form as endstates of collapse.

A class of collapse scenarios leading to regular black holes is identified.

Abstract

Semi-classical corrections at large curvature are employed in toy models of spherically symmetric gravitational collapse in order to avoid the formation of singularities. The resulting spacetimes may produce bounces, compact remnants or regular black holes in place of the usual Schwarzschild black hole. Within these models, a whole class of collapse scenarios leading to the formation of regular black holes may be obtained from General Relativity coupled to some theory of non-linear electrodynamics. In the present chapter we provide a thorough exposition of semi-classical dust collapse with particular attention to the conditions for the formation of regular black holes as the endstate of collapse.