English

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

General Relativity and Quantum Cosmology 2020-09-23 v2

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.

Keywords

Cite

@article{arxiv.2008.07046,
  title  = {Thin-shell traversable wormhole crafted from a regular black hole with asymptotically Minkowski core},
  author = {Thomas Berry and Francisco S. N. Lobo and Alex Simpson and Matt Visser},
  journal= {arXiv preprint arXiv:2008.07046},
  year   = {2020}
}

Comments

V1: 28 pages; 9 figures; V2: 7 references added; no physics changes

R2 v1 2026-06-23T17:53:40.316Z