Stability of Charged Thin-Shell Gravastars with Quintessence

TL;DR

This study investigates the stability of charged thin-shell gravastars in a quintessence background, analyzing different matter models and their impact on the structure's stability and physical properties.

Contribution

It introduces a new solution for charged gravastars with various matter distributions and examines their stability in a quintessence-influenced spacetime.

Findings

Barotropic model mostly unstable, stable with high quintessence parameter

Generalized Chaplygin gas model shows stable configurations

Proper length, entropy, and energy relate linearly to shell thickness

Abstract

This paper develops a new solution of gravitational vacuum star in the background of charged Kiselev black holes as an exterior manifold. We explore physical features and stability of thin-shell gravastars with radial perturbation. The matter thin layer located at thin-shell greatly affects stable configuration of the developed structure. We assume three different choices of matter distribution such as barotropic, generalized Chaplygin gas and generalized phantomlike equation of state. The last two models depend on the shell radius, also known as variable equation of state. For barotropic model, the structure of thin-shell gravastar is mostly unstable while it shows stable configuration for such type of matter distribution with extraordinary quintessence parameter. The resulting gravastar structure indicates stable behavior for generalized Chaplygin gas but unstable for generalized phantomlike model. It is also found that proper length, entropy and energy within the shell show linear relation with thickness of the shell.