Abstract
The aim of this paper is to analyze the cosmological evolution of holographic dark energy in f(G,T) gravity (G and T represent the Gauss-Bonnet invariant and trace of the energy-momentum tensor, respectively). We reconstruct f(G,T) model through correspondence scheme using power-law form of the scale factor. The qualitative analysis of the derived model is investigated with the help of evolutionary trajectories of equation of state and deceleration as well as state-finder diagnostic parameters and ωGT-ωGT′ cosmological phase plane. It is found that the equation of state parameter represents phantom epoch of the Universe whereas the deceleration parameter illustrates the accelerated phase. The state-finder plane corresponds to Chaplygin gas model while the freezing region is attained in ωGT-ωGT′ plane.
Highlights
The surprising discovery of the accelerated expansion of the Universe is one of the exciting progress areas in cosmology
The accelerating paradigm is considered as a consequence of an exotic type of force dubbed as dark energy (DE) which possesses repulsive characteristics with negatively large pressure
The cosmological constant (Λ) is the simplest approach while modified theories of gravity and dynamical DE models have been proposed in this regard
Summary
The surprising discovery of the accelerated expansion of the Universe is one of the exciting progress areas in cosmology. The accelerated expansion of the Universe is successfully discussed in literature via correspondence scheme of dynamical DE models with modified theories of gravity In this mechanism, generic function of the considered gravity is reconstructed by comparing the corresponding energy densities. Setare and Saridakis [26] developed a correspondence between holographic DE scenario in flat FRW Universe and phantom DE model in GB gravity coupled with a scalar field and found that this correspondence consistently leads to the cosmic accelerated expansion. Fayaz et al [35] studied the anisotropic Universe with ghost DE model and found that the reconstructed f(R, T) models can reproduce the cosmic phantom epoch satisfying the current observations Baffou and his collaborators [36] investigated the generalized Chaplygin gas interacting with f(R, T) theory of gravity in the presence of bulk as well as shear viscosities and found that the viscous parameters are well accommodated with observational data. The right plot shows that stability condition is satisfied for the reconstructed holographic DE F(G) model
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