The (2+1)-dimensional gravastars

Abstract

We propose a new model of a gravastar in (2+1) anti-de Sitter space-time. This new three dimensional configuration has three different regions with different equations of state: [I] Interior: 0 \leq r < r_1, ρ= -p ; [II] Shell: r_1 \leq r < r_2, ρ= p; [III] Exterior: r_2 < r, ρ= p =0. The outer region of this gravastar corresponds to the exterior (2+1) anti-de Sitter space-time, popularly known as the BTZ space-time. Like BTZ model, Λis taken to be negative, which at the junction turns out to be positive as required by stability of gravastar and mathematical consistency. After investigating the Interior space-time, Shell and Exterior space-time we have highlighted different physical features in terms of Length and Energy, Entropy, and Junction conditions of the spherical distribution. It is shown that the present model of charge-free gravastar in connection to the exterior (2+1) anti-de Sitter space-time or the BTZ space-time is stable and non-singular.

9 Latex pages with minor addition, Accepeted in PLB

References in corpus (7)

• Dark Energy and the Accelerating Universe
• Charged gravastars admitting conformal motion
• Thin shell wormholes in higher dimensiaonal Einstein-Maxwell theory
• A comparison of Hořava-Lifshitz gravity and Einstein gravity through thin-shell wormhole construction
• Thin-shell wormholes from charged black holes in generalized dilaton-axion gravity
• The dark energy equation of state
• Thin-shell wormholes from regular charged black holes

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