Destroying the event horizon of regular black holes

TL;DR

This paper investigates whether regular black holes, which lack a central singularity, can have their event horizons destroyed, potentially revealing quantum gravity effects and challenging classical black hole theorems.

Contribution

It demonstrates that regular black holes can be destroyed, suggesting possible observational evidence of quantum gravity and violation of the black hole area theorem.

Findings

Regular black holes can be destroyed without singularities.

Destroying horizons may reveal quantum gravity phenomena.

Black hole collision energy could exceed Hawking bounds.

Abstract

Recently, several authors have studied the possibility of overspinning or overcharging an existing black hole to destroy its event horizon and make the central singularity naked. When all the effects are properly taken into account, any attempt to destroy the black hole seems to be doomed to fail, in agreement with the weak cosmic censorship conjecture. In this letter, we study the possibility of destroying the event horizon of regular black holes. These objects have no central singularity and therefore they are not protected by the cosmic censorship hypothesis. Our results strongly support the conclusion that regular black holes can be destroyed. If we believe that the central singularity in astrophysical black holes is solved by quantum gravity effects, we might have a chance to see the black hole's internal region and observe quantum gravity phenomena. As our finding implies the violation of the black hole's area theorem, the collision of two black holes may release an amount of energy exceeding the Hawking bound, which can be experimentally tested by gravitational wave detectors.