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

Martin Bojowald·Rituparno Goswami·Roy Maartens·Parampreet Singh
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Abstract

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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Martin Bojowald, Rituparno Goswami, Roy Maartens, Parampreet Singh. 2005-07-13. A black hole mass threshold from non-singular quantum gravitational collapse. https://doi.org/10.1103/physrevlett.95.091302

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