Black hole mass threshold from nonsingular quantum gravitational collapse

Martin Bojowald, Rituparno Goswami, Roy Maartens, Parampreet Singh

Research output: Contribution to journalArticlepeer-review

105 Scopus citations


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.

Original languageEnglish (US)
Article number091302
JournalPhysical review letters
Issue number9
StatePublished - Aug 26 2005

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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