Perturbative dynamics of thin-shell wormholes beyond general relativity: an alternative approach

TL;DR

This paper explores the perturbative dynamics of thin-shell wormholes in theories beyond general relativity, revealing that certain assumptions restrict oscillatory behavior and lead to different results than traditional linearized methods.

Contribution

It introduces an alternative approach to analyze thin-shell wormholes beyond general relativity, challenging previous linearized assumptions and allowing for oscillatory evolutions.

Findings

Assumption of identical equations of state restricts oscillations.

New results differ significantly from linearized approaches.

Extended analysis to higher dimensions and alternative theories.

Abstract

Recent studies relating the approximations for the equations of state for thin shells and their consequent perturbative evolution are extended to thin-shell wormholes in theories beyond general relativity and more than four spacetime dimensions. The assumption of equations of state of the same form for static and slowly evolving shells appears as a strong restriction excluding the possibility of oscillatory evolutions. Then the new results considerably differ from previous ones obtained within the usual linearized approach.