More about thin-shell wormholes associated to cosmic strings

TL;DR

This paper extends previous studies on thin-shell wormholes linked to cosmic strings, providing additional evidence that such configurations are generally unstable under radial perturbations given typical matter equations of state.

Contribution

It advances the understanding of the stability of cosmic string-associated wormholes by extending prior analyses and supporting the conjecture of their inherent instability.

Findings

Configurations are not stable under radial velocity perturbations.

Evidence supports the conjecture of instability with reasonable matter assumptions.

Extended analysis reinforces previous stability concerns.

Abstract

Previous analysis about thin-shell wormholes associated to cosmic strings are extended. More evidence is found supporting the conjecture that, under reasonable assumptions about the equations of state of matter on the shell, the configurations are not stable under radial velocity perturbations.