Anisotropic Universe Models in Brans-Dicke Theory

TL;DR

This paper investigates Bianchi type I cosmological models within Brans-Dicke theory, analyzing anisotropic and magnetized fluids, and finds that models tend to isotropize over time, aligning with observational data.

Contribution

It introduces a detailed analysis of anisotropic Bianchi type I models in Brans-Dicke theory with self-interacting potential, considering various fluid types and scalar field behaviors.

Findings

Anisotropic fluids evolve towards isotropy at late times.

Models are consistent with observational data.

Scalar field follows a power-law behavior.

Abstract

This paper is devoted to study Bianchi type I cosmological model in Brans-Dicke theory with self-interacting potential by using perfect, anisotropic and magnetized anisotropic fluids. We assume that the expansion scalar is proportional to the shear scalar and also take power law ansatz for scalar field. The physical behavior of the resulting models are discussed through different parameters. We conclude that in contrary to the universe model, the anisotropic fluid approaches to isotropy at later times in all cases which is consistent with observational data.