Braneworld gravastars admitting conformal motion

The European Physical Journal C

Megan Govender¹  Ayan Banerjee²  Farook Rahaman²  Sayeedul Islam² 

[1] Department of Mathematics, Faculty of Applied Sciences, Durban University of Technology, 4000, Durban, South Africa;Department of Mathematics, Jadavpur University, 700 032, Kolkata, West Bengal, India;

关键词: Black Hole;    Brane Tension;    Conformal Killing Vector;    Conformal Motion;    Radiation Energy Density;   

DOI  :  10.1140/epjc/s10052-016-3887-1

来源: Springer

【 摘 要 】

In this paper, we propose the braneworld gravastar configuration which is an alternative to the braneworld black hole. We study the Mazur and Mottola gravastar model within the context of the Randall–Sundrum type II braneworld scenario, based on the fact that our four dimensional spacetime is a three-brane, embedded in a five dimensional bulk. We present exact solutions of the modified field equations in each of the three regions making up the gravastar, namely, (I) the core, (II) the shell, and (III) the vacuum exterior. The junction conditions at each interface are fulfilled and we further explore interesting physical properties such as length, energy and entropy of the spherical distribution.

【 授权许可】

CC BY