Black Hole Mass Threshold from Nonsingular Quantum Gravitational Collapse

Martin Bojowald, Rituparno Goswami, Roy Maartens, and Parampreet Singh
Phys. Rev. Lett. 95, 091302 – Published 24 August 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.

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  • Received 10 March 2005

DOI:https://doi.org/10.1103/PhysRevLett.95.091302

©2005 American Physical Society

Authors & Affiliations

Martin Bojowald1, Rituparno Goswami2, Roy Maartens3, and Parampreet Singh4

  • 1Max-Planck-Institut für Gravitationsphysik, Albert-Einstein-Institut, D-14476 Potsdam, Germany
  • 2Tata Institute for Fundamental Research, Colaba, Mumbai, India
  • 3Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth PO1 2EG, United Kingdom
  • 4Institute for Gravitational Physics and Geometry, Pennsylvania State University, University Park, Pennsylvania 16802, USA

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Issue

Vol. 95, Iss. 9 — 26 August 2005

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