Planckian charged black holes in ultraviolet self-complete quantum gravity

TL;DR

This paper investigates how charge affects Planck-scale black holes within a quantum gravity framework, revealing unique properties like a family of particle-black hole solutions and the role of charge shedding in their evolution.

Contribution

It introduces the analysis of charged black holes in ultraviolet self-complete quantum gravity, highlighting differences from neutral cases and the dynamics of charge loss.

Findings

Existence of a family of particle-black hole solutions with charge.

No true extremal charged particle-black holes, only quasi-extremal.

Charge is rapidly shed via Schwinger pair production, restoring particle-black hole conditions.

Abstract

We present an analysis of the role of the charge within the self-complete quantum gravity paradigm. By studying the classicalization of generic ultraviolet improved charged black hole solutions around the Planck scale, we showed that the charge introduces important differences with respect to the neutral case. First, there exists a family of black hole parameters fulfilling the particle-black hole condition. Second, there is no extremal particle-black hole solution but quasi extremal charged particle-black holes at the best. We showed that the Hawking emission disrupts the condition of particle-black hole. By analyzing the Schwinger pair production mechanism, the charge is quickly shed and the particle-black hole condition can ultimately be restored in a cooling down phase towards a zero temperature configuration, provided non-classical effects are taken into account.