Wormholes as a cure for black hole singularities

TL;DR

This paper demonstrates that wormholes can replace black hole singularities in certain models, resulting in geodesically complete spacetimes where observers may traverse the wormhole, challenging traditional singularity concepts.

Contribution

It introduces exactly solvable models showing how wormholes can resolve black hole singularities, maintaining geodesic completeness despite curvature divergences.

Findings

Wormholes replace singularities in black hole models

Geodesic completeness is achieved despite curvature divergences

Observers can sometimes pass through the wormhole

Abstract

Using exactly solvable models, it is shown that black hole singularities in different electrically charged configurations can be cured. Our solutions describe black hole space-times with a wormhole giving structure to the otherwise point-like singularity. We show that geodesic completeness is satisfied despite the existence of curvature divergences at the wormhole throat. In some cases, physical observers can go through the wormhole and in other cases the throat lies at an infinite affine distance.