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Phys. Rev. Lett. 96, 031302 (2006) [4 pages]

Quantum Evaporation of a Naked Singularity

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Rituparno Goswami1, Pankaj S. Joshi1, and Parampreet Singh2
1Tata Institute for Fundamental Research, Colaba, Mumbai 400005, India
2Institute for Gravitational Physics and Geometry, Pennsylvania State University, University Park, Pennsylvania 16802, USA

Received 28 June 2005; published 27 January 2006

We investigate here quantum effects in gravitational collapse of a scalar field model which classically leads to a naked singularity. We show that nonperturbative semiclassical modifications near the singularity, based on loop quantum gravity, give rise to a strong outward flux of energy. This leads to the dissolution of the collapsing cloud before the singularity can form. Quantum gravitational effects thus censor naked singularities by avoiding their formation. Further, quantum gravity induced mass flux has a distinct feature which may lead to a novel observable signature in astrophysical bursts.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.031302
DOI:
10.1103/PhysRevLett.96.031302
PACS:
04.60.Pp, 04.20.Dw