Thin-shell traversable wormhole crafted from a regular black hole with asymptotically Minkowski core

TL;DR

This paper constructs a stable, traversable thin-shell wormhole from a regular black hole with an asymptotically Minkowski core, demonstrating enhanced stability and reduced exotic matter requirements compared to Schwarzschild-based models.

Contribution

It introduces a new thin-shell wormhole model based on a regular black hole with an exponential suppression core, analyzing its stability and energy conditions.

Findings

Increased suppression parameter 'a' enhances wormhole stability.

Higher 'a' reduces the amount of exotic matter needed.

The wormhole mimics black hole features with improved stability.

Abstract

Recently, a novel model for a regular black hole was advocated which possesses an asymptotically Minkowski core implemented via an exponential suppression (in the core region) of the Misner-Sharp quasi-local mass. Using this regular black hole as a template, we shall construct a spherically symmetric thin-shell traversable wormhole using the "cut-and-paste" technique, thereby constructing yet another black hole mimicker. The surface stress-energy at the wormhole throat is calculated, and the stability of the wormhole is analyzed. An important result is that, (as compared to their Schwarzschild thin-shell counterparts), increasing the exponential suppression of the Misner-Sharp quasi-local mass by increasing the suppression parameter "a", also considerably increases the stability regions for these thin-shell wormholes, and furthermore minimizes the amount of energy condition violating exotic matter required to keep the wormhole throat open.