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Various dark energy models for variables G and $Λ$ $Λ$ in f(R, T) modified theory

Can Aktaş

Department of Mathematics, Çanakkale Onsekiz Mart University, Arts and Sciences Faculty, Terzioğlu Campus, 17020, Turkey

E-mail Address: canaktas@comu.edu.tr

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https://doi.org/10.1142/S0217732319500986Cited by:19 (Source: Crossref)

Abstract

In this paper, we have researched tachyon field, k-essence and quintessence dark energy (DE) models for Friedmann–Robertson–Walker (FRW) universe with varying G and $Λ$ $Λ$ in f(R, T) gravitation theory. The theory of f(R, T) is proposed by Harko et al. [Phys. Rev. D84, 024020, 2011]. In this theory, R is the Ricci scalar and T is the trace of energy–momentum tensor. For the solutions of field equations, we have used linearly varying deceleration parameter (LVDP), the equation of state (EoS) and the ratio between $Λ$ $Λ$ and Hubble parameter. Also, we have discussed some physical behavior of the models with various graphics.

Keywords:

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