Charged Gravastars with Conformal Motion in f(R,T) Gravity

TL;DR

This paper investigates charged gravastars within $f(R,T)$ gravity, analyzing their structure and physical properties across different domains, and demonstrating the existence of non-singular, physically consistent solutions with charge and conformal symmetry.

Contribution

It introduces a novel model of charged gravastars in $f(R,T)$ gravity considering conformal motion, extending previous models by including charge and specific gravitational modifications.

Findings

Charged gravastars can have non-singular solutions with consistent physical properties.

The interior exhibits repulsive forces due to negative pressure and energy density.

The exterior is modeled as de Sitter spacetime with Reissner-Nordström metric.

Abstract

This paper studies the effects of charge on a peculiar stellar object, recognized as gravastar, under the influence of $f(R,T)$ gravity by considering the conjecture of Mazur and Mottola in general relativity. The gravastar is also known as an alternative to a black hole and is expressed by three distinct domains named as (i) the interior domain, (ii) the intermediate shell and (iii) the exterior domain. We analyze these domains for a specific $f(R,T)$ gravity model conceding the conformal Killing vectors. In the interior domain, we assume that pressure is equal to negative energy density which leads to the existence of repulsive force on the spherical shell. The intermediate shell consists of ultra-relativistic plasma and pressure which shows a direct relation with energy density and counterbalances the repulsive force applied by the interior domain. The exterior vacuum spherical domain is taken to be the de Sitter spacetime illustrated by the Reissner-Nordstr\"{o}m metric. We conclude that non-singular solutions of charged gravastar with various physical properties such as length, energy, entropy and equation of state parameter are physically consistent.