Evaporation of near-extremal Reissner-Nordstrom black holes

TL;DR

This paper models the evaporation process of near-extremal Reissner-Nordstrom black holes using an effective solvable quantum theory, revealing it takes an infinite amount of time.

Contribution

It introduces an analytically solvable model for black hole evaporation near extremality, advancing understanding of quantum effects in black hole dynamics.

Findings

Evaporation requires infinite time to complete.

The model remains solvable at one-loop quantum level.

Near-extremal black holes can be described by an effective theory.

Abstract

The formation of near-extremal Reissner-Nordstrom black holes in the S-wave approximation can be described, near the event horizon, by an effective solvable model. The corresponding one-loop quantum theory remains solvable and allows to follow analytically the evaporation process which is shown to require an infinite amount of time.