Energy extraction from electrovacuum black holes via production of pairs of oppositely charged particles

TL;DR

This paper explores how energy can be extracted from charged, rotating black holes through a process involving pair creation, showing that significant energy extraction is possible without extreme conditions if particles are sufficiently charged.

Contribution

It introduces a simple model of pair creation in collisional Penrose processes, demonstrating energy extraction without fine-tuning or extremality.

Findings

Significant energy extraction is possible without extremality.

Charged particles can escape and carry away energy.

Pair creation enhances the energy extraction process.

Abstract

We consider collisional Penrose process for charged, rotating black holes together with a simple model of pair creation, in which two oppositely charged particles are produced in a collision of two neutral particles. We highlight that significant energy extraction is possible without assuming fine-tuning or extremality as long as the escaping particles are sufficiently charged.