Investigating the physical and geometrical parameters of the cosmological models with anisotropic background

Abstract

In this paper, we have investigated some accelerating cosmological models at the backdrop of an anisotropic metric in an extended gravity theory. Two viable cosmological models one with a little rip behaviour and the other with a hyperbolic form of Hubble parameter have been constructed. The dynamical aspects of the models along with some physical and geometrical parameters are analysed. Both the models presented here evolve in the phantom-like region and overlap with ΛCDM model at late times. We carried out a geometrical diagnosis of the model to show the viability of the models.

Effect of bulk viscosity in cosmic acceleration

“…In this gravity, Khan et al have studied the gravitational collapse of perfect fluid in a spherically symmetric space-time [33]; and effects of electromagnetic field on gravitational collapse [34]. Tripathy and Mishra [35] have studied the phantom cosmology whereas Mishra and Tripathy [36] investigated the little rip and hyperbolic form of scale factor in f (R, T ) gravity. Triapthy et al have constructed some cosmic transit model in f (R, T ) gravity theory and studied their cosmographic aspects [37].…”

Cosmological Models with Big Rip and Pseudo Rip Scenarios in Extended Theory of Gravity

“…Tripathy [ 21 ] has discussed the role of skewness parameters in anisotropic models with little rip and pseudo rip scenarios. Mishra and Tripathy [ 22,23 ] have studied the LR and PR models that evolve in the phantom‐like region and at late times overlap with ΛCDM model. In f ( T ) gravity, Hanafya and Saridakis [ 24 ] have shown the ever lasting PR phase of the universe.…”

Cosmological models with Big rip and Pseudo rip Scenarios in extended theory of gravity

“…In f (R) gravity, Vasilev et al [13] have studied the quantum and classical fate of the BR cosmology. Mishra and Tripathy [14] have studied the LR model that evolves in the phantom-like region and at late times overlap with ΛCDM model. In f (T ) gravity, Hanafya and Saridakis [15] have shown the ever lasting PR phase of the universe.…”