New wormhole models with stability analysis via thin-shell in teleparallel gravity

Faisal Javed, Saadia Mumtaz, G. Mustafa, Ibrar Hussain, Wu-Ming Liu

The European Physical Journal C · 2022 · 41 citations · 74 references

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TL;DR

The study investigates new wormhole solutions within teleparallel gravity. The authors analyze energy conditions for two shape functions, construct a thin‑shell wormhole via a cut‑and‑paste Schwarzschild exterior, and study its stability using linearized radial perturbations. Exotic matter is required because energy conditions are violated, and the stability regions and event‑horizon location depend on the chosen physical parameters.

Abstract

Abstract This study explores new wormhole solutions in the background of teleparallel gravity. All the energy conditions are investigated for two different new calculated shape functions. The presence of exotic matter is confirmed due to the violation of the energy conditions. Thin-shell around the wormhole geometry is obtained by using the cut and paste approach taking the Schwarzschild black hole as an exterior manifold. The stability of thin-shell is explored by using linearized radial perturbation about equilibrium shell radius for both choices of calculated shape functions. It is concluded that stable regions and the position of the expected event horizon depend on the choice of physical parameters.

References

74