Energy Extraction from the Einstein-Born-Infeld Black Hole

TL;DR

This paper investigates energy extraction from Einstein-Born-Infeld black holes, comparing it with Reissner-Nordstrom black holes, and finds that the nonlinear electromagnetic nature affects the amount of extractable energy, especially in extreme cases.

Contribution

It extends the analysis of energy extraction to Einstein-Born-Infeld black holes, highlighting differences from linear electromagnetic black holes and exploring extreme cases.

Findings

More energy can be extracted from RN black holes than from EBI black holes for fixed charge.

Extreme EBI black holes can yield more extractable energy than extreme RN black holes.

Extreme EBI black holes do not have a linear electromagnetic black hole limit.

Abstract

The energy extraction from a Einstein-Born-Infeld (EBI) black hole is addressed determining the extension of the ergosphere as well as the extractable energy using the irreducible mass concept. These results are compared with the Reissner-Nordstrom (RN) ones; RN is the linear electromagnetic counterpart of the BI black hole. It turns out that for a fixed charge Q, more energy can be extracted from the RN black hole than from the EBI one. The extreme case is investigated as well, presenting remarkable features, for instance that more energy can be extracted from extreme EBI black holes than from extreme RN, however, extreme EBI black holes lack of a linear electromagnetic black hole limit.