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 (Peer-Reviewed Journal) 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, Scopus
  • Page Numbers: pp.407-414
  • Keywords: Marder universe, f(R, T) gravity, Quadratic equation of state, Cosmological term, COSMOLOGICAL MODEL, DARK ENERGY, UNIVERSE

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.