LRS Bianchi type IV space-time with anisotropic fluid


Sofuoglu D.

CHINESE JOURNAL OF PHYSICS, vol.57, pp.226-239, 2019 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 57
  • Publication Date: 2019
  • Doi Number: 10.1016/j.cjph.2018.12.002
  • Title of Journal : CHINESE JOURNAL OF PHYSICS
  • Page Numbers: pp.226-239

Abstract

In this study, locally rotationally symmetric Bianchi type IV universe is considered in Einstein's general theory of relativity in the presence of a cosmic fluid with anisotropic pressure but without heat flux. For this shear-free model, assuming linear barotropic equation of state, the exact solution of the field equation is obtained for the values of equation of state parameter -2/3 and -1/3. It has been shown that the model, which mimics dark energy, has an accelerating expansion anisotropy at the early time and approaches isotropy as the cosmic time increases.