Model for Modified Holographic Ricci Dark Energy in Gravitation Theory of Branc Dicke

Abstract

In this cosmological model, we have studied the spatially homogeneous and anisotropic Bianchi type and axially symmetric model filled with dark matter and dark energy in Brans-Dicke’s [1] theory of gravitation. Here, we consider the modified holographic Ricci dark energy defined by Chen and Jing [21] as the suitable condition of dark energy. To obtain a solution we assumed the scale factor used Mishra et al. [43]. We have solved field equations of Brans-Dicke theory of gravitation with the help of an axially symmetric anisotropic Bianchi-type space-time. We have determined the cosmological parameters, namely, EoS parameter, MHRDE density, matter density, skewness parameter, and BD scalar field. Here the various phenomena like the expanding universe, and shift from anisotropy to isotropy are observed in this model. A detailed physical discussion of these dynamical parameters are presented graphically. Some physical and geometrical behaviours of the models are also discussed and found to be in good agreement with the recent observations (OHD+JLA) datasets.

Magnetized Bianchi Model with Time-dependent Deceleration Parameter

“…In the discussion of the anisotropic Bianchi Type-III dark energy cosmological model with a massive scalar meson field in general relativity, Raju et al (5) noted that the EoS parameter of the model varies initially in the phantom region and then approaches the quintessence region as the model's physical parameters become independent of the scalar field at late times. In the case of modified holographic Ricci dark energy, Dixit et al (6) explored the axially symmetric, spatially homogeneous anisotropic Bianchi type in Brans Dicke theory and noted that the EoS passes the phantom divide line and decreases with the increase in the scalar field. Many other authors investigated Bianchi type-III spacetime in different gravitational theories that provided many series of literature (Pawar and Sahare (7) , Koronur (8) , Bhardwaj and Rana (9) , Baro et al (10) ).…”