Spherical Gravitational Collapse in f(R) Gravity with Linear Equation of State

被引：6

作者：

Ahmad, Zahid ^{[1
]}

Shah, Hassan ^{[2
]}

Khan, Suhail ^{[2
]}

机构：

[1] COMSATS Inst Informat Technol, Dept Math, Univ Rd, Abbottabad 22060, Kpk, Pakistan

[2] Univ Peshawar, Dept Math, Peshawar Khyber Pukhtoon, Pakistan

来源：

COMMUNICATIONS IN THEORETICAL PHYSICS | 2018年 / 70卷 / 02期

关键词：

gravitational collapse; matching conditions; dark energy; apparent horizon; F R GRAVITY; PERFECT FLUID COLLAPSE; COSMOLOGICAL CONSTANT; GENERAL-RELATIVITY; DUST COLLAPSE; DARK ENERGY; SUPERNOVAE;

D O I：

10.1088/0253-6102/70/2/185

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In a paper [Gen. Relativ. Gravit. 48 (2016) 57] Chakrabarti and Banerjee investigated perfect fluid collapse in f(R) gravity model and claimed that such a collapse is possible. In this paper we show that without the assumption of dark energy it is not possible that perfect fluid spherical gravitational collapse will occur. We have solved the field equations by assuming linear equation of state (p = omega mu) in metric f(R) gravity with omega = -1. It is shown that Chakrabarti and Banerjee reached to false conclusion as they derived wrong field equations. We have also discussed formation of apparent horizon and singularity.

引用

页码：185 / 189

页数：5

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