Quadratic equation of state solutions with Lambda in f(R, T) gravitation theory


Aygun S., Aktas C., Mishra B.

INDIAN JOURNAL OF PHYSICS, vol.93, no.3, pp.407-414, 2019 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 93 Issue: 3
  • Publication Date: 2019
  • Doi Number: 10.1007/s12648-018-1309-y
  • Journal Name: INDIAN JOURNAL OF PHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.407-414
  • Keywords: Marder universe, f(R, T) gravity, Quadratic equation of state, Cosmological term, COSMOLOGICAL MODEL, DARK ENERGY, UNIVERSE
  • Çanakkale Onsekiz Mart University Affiliated: Yes

Abstract

In this paper, we have investigated the perfect fluid matter distribution with different quadratic equation of states (EoS) parameters in the form (i) p = p(0) + alpha rho + beta rho(2), (ii) p= alpha rho + rho(2)/rho(c) and (iii) p = alpha rho(2) - rho for Marder space-time in f(R,T) theory. The field equations of f(R,T) gravity with the inclusion of cosmological parameter Lambda have been derived for the first case of Harko et al. (Phys Rev D 84(2):024020, 2011) in the form f(R,T)=R + 2f(T). The physical parameters are investigated and its properties are studied.