A black hole mass threshold from non-singular quantum gravitational collapse

Details A black hole mass threshold from non-singular quantum gravitational collapse A black hole mass threshold from non-singular quantum gravitational collapse

2005-03-09

arxiv.org/abs/gr-qc/0503041v2

Phys.Rev.Lett. 95 (2005) 091302

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Minor changes to match published version in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.95.091302

Quantum gravity is expected to remove the classical singularity that arises as the end-state of gravitational collapse. To investigate this, we work with a toy model of a collapsing homogeneous scalar field. We show that non-perturbative semi-classical effects of Loop Quantum Gravity cause a bounce and remove the black hole singularity. Furthermore, we find a critical threshold scale, below which no horizon forms -- quantum gravity may exclude very small astrophysical black holes.

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