Formation of Cylindrical Gravastars in Modified Gravity

TL;DR

This paper explores the formation and physical properties of cylindrical gravastars within the modified gravity framework of $f(R,T)$ theory, providing insights into their structure and characteristics as potential black hole alternatives.

Contribution

It introduces a formulation of cylindrical gravastars in $f(R,T)$ gravity and analyzes their physical features using matching conditions and shell properties.

Findings

Derived a mass function for the thin shell of the gravastar.

Calculated entropy, proper length, and energy of the shell.

Provided a theoretical model for cylindrical gravastars in modified gravity.

Abstract

In this paper, we analyze a few physical characteristics of gravastar with cylindrical geometry in $f(R,T)$ theory, where $R$ is the Ricci scalar and $T$ is the trace of energy-momentum tensor. The gravastar is generally considered to be a substitute of a black hole with three different regions. In the present work, we examine the formulation of gravastar-like cylindrical structures in $f(R,T)$ theory. By using Darmois and Israel matching conditions, we formulate a mass function of a thin shell. We calculate the different physical characteristics of gravastar, in particular, entropy within the thin shell, proper length of the intermediate thin shell as well as energy of the shell.