Possible quantum instability of primordial black holes

TL;DR

The paper proposes a quantum process called anti-evaporation that could occur in primordial black holes, especially within supersymmetric grand unified theories, potentially linking black hole physics to supersymmetry evidence.

Contribution

It introduces the concept of anti-evaporation as a quantum process opposite to Hawking radiation and explores its occurrence in supersymmetric GUT models, particularly SO(10).

Findings

Anti-evaporation can occur in SUSY versions of SO(10) GUT.

Primordial black holes might serve as evidence for supersymmetry.

Anti-evaporation is significant for exotic black holes with multiple horizons.

Abstract

Evidence for the possible existence of a quantum process opposite to the famous Hawking radiation (evaporation) of black holes is presented. This new phenomenon could be very relevant in the case of exotic multiple horizon Nariai black holes and in the context of common grand unified theories. This is clearly manifested in the case of the SO(10) GUT, that is here investigated in detail. The remarkable result is obtained, that anti-evaporation can occur there only in the SUSY version of the theory. It is thus concluded that the existence of primordial black holes in the present Universe might be considered as an evidence for supersymmetry.