Regular Electric Black Holes from EMS Gravity

TL;DR

This paper develops Einstein-Maxwell-Scalar theories to construct regular electric black holes, overcoming previous no-go theorems, and explores their thermodynamics and potential applications.

Contribution

It introduces a novel EMS gravity framework that admits regular electric black holes, bypassing limitations of nonlinear electrodynamics models.

Findings

Regular electric black holes are constructed within EMS theories.

Black hole mass can be determined solely from the Maxwell field.

The formalism enables applications previously limited to non-regular black holes.

Abstract

We construct Einstein-Maxwell-Scalar (EMS) theories that admit regular electric black holes. Such a Maxwell-scalar theory is equivalent to some nonlinear electrodynamics (NLED) at the level of equations of motion, but it has the advantage of circumventing the no-go theorem of regular electric black holes under a given Lagrangian of NLED. We study the thermodynamics and show that the mass of the regular black hole can be determined solely by the Maxwell field, without having to know the metric profile function. Our formalism allows to study the applications of the electrically-charged regular black holes in areas that were previously available only to the non-regular ones.