Quantum Evaporation of a Naked Singularity
Abstract
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.
 Publication:

Physical Review Letters
 Pub Date:
 January 2006
 DOI:
 10.1103/PhysRevLett.96.031302
 arXiv:
 arXiv:grqc/0506129
 Bibcode:
 2006PhRvL..96c1302G
 Keywords:

 04.60.Pp;
 04.20.Dw;
 Loop quantum gravity quantum geometry spin foams;
 Singularities and cosmic censorship;
 General Relativity and Quantum Cosmology;
 Astrophysics;
 High Energy Physics  Theory
 EPrint:
 4 pages, 2 figures. Minor changes to match published version in Physical Review Letters