Energy Extraction and Evolution of Regular Black Holes: The Case of Bardeen Spacetime

TL;DR

This paper investigates the energy extraction mechanisms and evolutionary processes of regular black holes, focusing on Bardeen spacetime, and proposes models for charge evaporation and mass accretion affecting their stability.

Contribution

It introduces two models for regular black hole evolution through charge evaporation and mass accretion, advancing understanding of their stability and singularity avoidance.

Findings

Magnetic charge evaporation can lead to black hole singularity formation.

Proposed models describe how regular black holes evolve over time.

Energy extraction via the charged Penrose process is analyzed.

Abstract

This paper examines regular black holes, in particular the Bardeen spacetime where singularities are replaced by non-singular cores. It explores the energy extraction through the charged Penrose process and shows that magnetic charge evaporation can drive a regular black hole towards a singularity. Two evaporation models are proposed, dealing with charge loss and combined charge evaporation with mass accretion, providing insights into the evolution and stability of regular black holes.