Black hole superradiance in Poincar\'e gauge theory

TL;DR

This paper explores how torsion in Poincaré gauge theory allows Dirac fermions to extract energy from rotating black holes through superradiance, differing from classical General Relativity.

Contribution

It demonstrates that torsion enables black hole superradiance with fermions, a novel mechanism not present in standard General Relativity.

Findings

Torsion permits energy extraction from black holes via fermionic superradiance.

Superradiance occurs with Dirac fermions in Poincaré gauge theory.

The process respects the Pauli exclusion principle.

Abstract

We investigate the phenomenon of black hole superradiance in the presence of torsion within the framework of Poincar\'e gauge theory. In particular, in contrast to the classical approach of General Relativity, we show that the inclusion of torsion in the space-time geometry enables the energy extraction from rotating black holes by Dirac fermions via chiral asymmetry, while preserving the Pauli exclusion principle.