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
收藏
页码：185 / 189
页数：5
相关论文
共 50 条
  • [1] Spherical Gravitational Collapse in f(R) Gravity with Linear Equation of State
    Zahid Ahmad
    Hassan Shah
    Suhail Khan
    CommunicationsinTheoreticalPhysics, 2018, 70 (08) : 185 - 189
  • [2] Quasi-spherical gravitational collapse in f(R, T) gravity
    Wang, Chuyun
    Asghar, Hajra
    Shah, Hasrat Hussain
    Shah, Hassan
    INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2024, 39 (15N16):
  • [3] Spherical collapse in f(R) gravity
    Borisov, Alexander
    Jain, Bhuvnesh
    Zhang, Pengjie
    PHYSICAL REVIEW D, 2012, 85 (06)
  • [4] Is gravitational collapse possible in f(R) gravity?
    Casado-Turrion, Adrian
    Dobado, Antonio
    de la Cruz-Dombriz, Alvaro
    PHYSICAL REVIEW D, 2022, 105 (08)
  • [5] Gravitational Dust Collapse in f (R) Gravity
    Shamir, M. Farasat
    Ahmad, Zahid
    Raza, Zahid
    INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS, 2015, 54 (05) : 1450 - 1460
  • [6] Gravitational Dust Collapse in f (R) Gravity
    M. Farasat Shamir
    Zahid Ahmad
    Zahid Raza
    International Journal of Theoretical Physics, 2015, 54 : 1450 - 1460
  • [7] Role of adiabatic index on the evolution of spherical gravitational collapse in Palatini f(R) gravity
    M. Sharif
    Z. Yousaf
    Astrophysics and Space Science, 2015, 355 : 317 - 331
  • [8] Role of adiabatic index on the evolution of spherical gravitational collapse in Palatini f(R) gravity
    Sharif, M.
    Yousaf, Z.
    ASTROPHYSICS AND SPACE SCIENCE, 2015, 355 (02) : 317 - 331
  • [9] Spherical collapse in vacuum f(R) gravity
    Soumya Chakrabarti
    Narayan Banerjee
    Astrophysics and Space Science, 2014, 354 : 571 - 576
  • [10] Spherical collapse in vacuum f(R) gravity
    Chakrabarti, Soumya
    Banerjee, Narayan
    ASTROPHYSICS AND SPACE SCIENCE, 2014, 354 (02) : 571 - 576
12345