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arXiv · 2404.17904

Imprints of dark energy models on structural properties of charged gravastars in extended teleparallel gravity

G. Mustafa·Faisal Javed·Arfa Waseem·S. K. Maurya·Ghulam Fatima
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Abstract

A gravastar comprises three distinct sections: the interior zone, the middle shell, and its outer region. By considering a specific extended teleparallel gravity model that incorporates conformal Killing vectors and provides the field equations. We observe that the interior part exhibits a repellent force acting on the shell. This is based on the assumption that pressure is analogous to negative energy density. The middle shell consists of ultrarelativistic plasma and pressure, which is directly proportional to the matter density and counteracts the repellent force exerted by the inner zone. In the outer zone, we compute the precise solution in a vacuum and then connect these spacetimes using junction conditions to investigate stability limits. We aim to investigate the influence of dark energy models on the stable characteristics of gravastar configurations. It is worth noting that the phantom field exhibits the highest stable configurations for all physically viable selections of physical parameters. We additionally investigate the influence of physical parameters on the correct length, entropy, and energy of the gravastar.

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G. Mustafa, Faisal Javed, Arfa Waseem, S. K. Maurya, Ghulam Fatima. 2024-04-27. Imprints of dark energy models on structural properties of charged gravastars in extended teleparallel gravity. https://arxiv.org/abs/2404.17904

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