Quantum-gravity phenomenology with primordial black holes

TL;DR

This paper explores how quantum gravity could cause primordial black holes to explode via tunneling into white holes, potentially observable through radio and gamma-ray signals, offering new avenues for quantum-gravity phenomenology.

Contribution

It introduces the idea that primordial black holes might rapidly explode due to quantum tunneling, providing a novel observational signature for quantum gravity effects.

Findings

Black holes may tunnel into white holes, shortening their lifetime.

Such explosions could produce detectable radio and gamma-ray signals.

This mechanism offers a new observational window into quantum gravity phenomena.

Abstract

Quantum gravity may allow black holes to tunnel into white holes. If so, the lifetime of a black hole could be shorter than the one given by Hawking evaporation, solving the information paradox. More interestingly, this could open to a new window for quantum-gravity phenomenology, in connection with the existence of primordial black holes. We discuss in particular the power of the associated explosion and the possibility to observe an astrophysical signal in the radio and in the gamma wavelengths.