Black bounces as magnetically charged phantom regular black holes in Einstein-nonlinear electrodynamics gravity coupled to a self-interacting scalar field

TL;DR

This paper introduces new exact black-bounce solutions in General Relativity, involving magnetically charged phantom fields and nonlinear electrodynamics, expanding the class of regular black hole models beyond previous Ellis wormhole-based solutions.

Contribution

It presents novel black-bounce solutions that differ from prior models by not reducing to Ellis wormholes, using superpositions of phantom scalar and nonlinear electromagnetic fields.

Findings

Derived several exact black-bounce solutions in GR.

Identified a new class of solutions without Ellis wormhole limits.

Demonstrated the role of phantom and nonlinear fields in regular black holes.

Abstract

The "black-bounce" spacetime geometries, were recently proposed in [A. Simpson, M. Visser, JCAP 02 (2019) 042] as regular black holes that bouncing into a future incarnation of the universe. In this work we will present several black-bounce exact solutions of General Relativity. Among them is a novel type of black-bounce solutions, which in contrast of the Simpson-Visser type [A. Simpson, M. Visser, JCAP 02 (2019) 042], do not have the Ellis wormhole metric as a particular case. The source of these solutions are linear superposition of phantom scalar fields and nonlinear electromagnetic fields.