Singularity-free gravitational collapse and asymptotic safety

TL;DR

This paper develops quantum-improved stellar models within the asymptotic safety framework, resulting in singularity-free gravitational collapse scenarios with compatible exterior and interior solutions.

Contribution

It introduces a new class of quantum-corrected stellar models that avoid shell-focusing singularities using asymptotic safety techniques.

Findings

Models are free of shell-focusing singularities

Exterior solutions based on Quantum Einstein Gravity

Interior dust solutions compatible with quantum corrections

Abstract

A general class of quantum improved stellar models with interiors composed of non-interacting ('dust') particles is obtained and analyzed in a framework compatible with asymptotic safety. First, the effective exterior, based on the Quantum Einstein Gravity approach to asymptotic safety is presented and, second, its effective compatible dust interiors are deduced. The resulting stellar models appear to be devoid of shell-focusing singularities.