Document Type

Article

Publication Date

8-26-2005

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 nonperturbative semiclassical 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. © 2005 The American Physical Society.

Publication Source (Journal or Book title)

Physical Review Letters

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