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

F. S. N. Lobo, M. Visser

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 quasilocal mass. Using this regular black hole as a template, we 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 quasilocal 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
General Relativity, Quantum Cosmology

Physical Review D
Volume 102, Issue 0640, Page 28
2020 September

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Instituto de Astrofísica e Ciências do Espaço Universidade do Porto Faculdade de Ciências da Universidade de Lisboa
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia