Particle creation by loop black holes

Abstract

We study the black hole particle production in a regular spacetime metric obtained in a minisuperspace approach to loop quantum gravity. In different previous papers the static solution was obtained and shown to be singularity-free and self-dual. In this paper expanding a previous study of the black hole dynamics we repeat the Hawking analysis which leads to a thermal flux of particles at the future infinity. The evaporation time is infinite and the unitarity is recovered due to the regularity of the spacetime and to the characteristic behavior of the surface gravity.

Quantum Tunneling Radiation from Loop Quantum Black Holes and the Information Loss Paradox

“…which coincides with the former Expression (11) found out in the references [40][41][42]. From the expression for LQBH temperature, one obtains for the entropy:…”

“…The temperature and entropy of this kind of black hole are calculated by the use of the tunneling method. These first results presented in [38] replicate those found in the references [40][41][42], where other methods have been used. In this way, it can be demonstrated that the quantum tunneling formalism can be successfully applied to address the thermodynamics of LQBHs, opening a path for a whole range of applications.…”

“…We have shown that the results obtained in the references [40][41][42] for the LQBH temperature and entropy can be reproduced by the use of the tunneling method, in a way that such a method can be, in fact, reliably applied in order to address LQBH thermodynamics. We have also presented the results related with the inclusion of back reaction effects in the description of the LQBH evaporation process.…”

On the viability of regular black holes

“…2 The only exception being the "loop black hole" [52], where the evaporation is shown to happen in an infinite time, leaving no remnant. Infinite evaporation times have also been found in specific singular solutions in the presence of higher-curvature terms [53].…”

On the holographic basis of loop quantum cosmology

“…The information loss problem has also been discussed in the LQBH's framework. As an important result, the problem of information loss by black holes can be relieved in this scenario [44,46].…”