Study Of Anisotropic Cosmological Models In f (R,T) Theory Of Gravity

Abstract

The current state of observational data suggests that the cosmos is homogenous and isotropic on a sufficiently vast scale. But this doesn't rule out the potential of some anisotropy occurring in the early stages of the history of the cosmos and then being damped away in subsequent epochs. The homogeneous but anisotropic Bianchi models have gained popularity because of this hypothesis. Second, the issues with the standard CDM model in general relativity have sparked a lot of interest in modified gravity. For this reason, the Bianchi type-I cosmological model has been investigated in f (R, T)-modified gravity in the present research. A model showing a change from early deceleration to late-time acceleration was obtained by assuming a particular form of the deceleration parameter, which was inspired by certain concepts from cosmography. The model speeds up from the outset for a fixed amount of time before slowing down. The model's physical behavior is investigated as well. Both theories' physical and kinematic characteristics for the future of the cosmos are examined at length. For all scenarios, we delved into what makes WEC, DEC, SEC, and energy density tick.