Various dark energy models with time-varying G and Lambda in f(R, T) gravitation theory


AYGÜN S.

MODERN PHYSICS LETTERS A, cilt.34, 2019 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 34 Konu: 34
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1142/s0217732319502808
  • Dergi Adı: MODERN PHYSICS LETTERS A

Özet

In this research, we have investigated tachyon and k-essence dark energy (DE) candidates with varying G and Lambda for Marder universe in f(R, T) gravitation theory [Harko et al., Phys. Rev. D 84, 024020 (2011)]. Here, f(R, T) is the arbitrary function of Ricci scalar (R) and the trace of T-ik. To solve f(R, T) gravity field equations, three different approximations have been used such as cosmological term, equation of state (EoS) parameter and the anisotropy feature of Marder universe. Also, we have discussed some physical results with various graphics.