Remark on near-horizon geometry of extreme regular black holes

TL;DR

This paper demonstrates that the near-horizon geometry of generic extreme regular black holes in Einstein gravity with nonlinear electrodynamics is universally described by the $AdS_2 imes S^2$ spacetime.

Contribution

It establishes a universal near-horizon geometry for extreme regular black holes in a specific gravity and electrodynamics framework.

Findings

Near-horizon geometry is $AdS_2 imes S^2$ for generic extreme regular black holes.

The result applies to solutions in Einstein gravity coupled with nonlinear electrodynamics.

Provides insight into the structure of extremal regular black holes.

Abstract

It is shown that the near horizon geometry of a generic extreme regular black hole solution of Einstein gravity coupled to nonlinear electrodynamics is described by the $AdS_2 \times S^2$ spacetime.