Anisotropic Renyi holographic dark energy models in general relativity

Abstract

The purpose of this paper is to construct anisotropic and spatially homogeneous Bianchi type-VI0 Renyi holographic dark energy (RHDE) models in general relativity. For this purpose, we consider both Hubble and Granda-Oliveros horizons as IR cutoff. To obtain a deterministic solution of the field equations of the models we assume a relationship between the metric potentials which leads to an exponential solution and accelerated expansion. In order to investigate the physical behavior of our dark energy models, we obtain some important cosmological parameters like Hubble, deceleration, equation of state and statefinder as well as ωde-ωde′ planes. We also included the stability analysis for the dark energy models through the squared speed of sound. It is observed that the equation of state parameter shows quintom as well as the phantom behavior of universe. Also, the squared speed of sound gives the stability of RHDE model with Hubble horizon but unstable behavior for RHDE model with the Granda-Oliveros horizon. Statefinder diagnostic and deceleration parameters exhibit the accelerated expansion of the universe in both models and also correspond to the ΛCDM model at late times. The deceleration and equation of state parameters support recent observational data in both models.

Keywords

• Bianchi type-VI0 model
• Dark energy model
• General relativity
• Cosmology
• Renyi holographic dark energy