Dynamics of Magnetized Bulk Viscous Strings in Brans-Dicke Gravity

TL;DR

This paper models an anisotropic universe with magnetized viscous strings in Brans-Dicke gravity, showing it can describe an accelerated expansion under specific conditions.

Contribution

It introduces a new cosmological model incorporating viscous strings and scalar fields in Brans-Dicke gravity, analyzing anisotropic expansion dynamics.

Findings

Universe remains anisotropic over time.

Model predicts accelerated expansion for certain parameters.

Physical implications are discussed through parameter analysis.

Abstract

We explore locally rotationally symmetric Bianchi I universe in Brans-Dicke gravity with self-interacting potential by using charged viscous cosmological string fluid. We use a relationship between the shear and expansion scalars and also take the power law for scalar field as well as self-interacting potential. It is found that the resulting universe model maintains its anisotropic nature at all times due to the proportionality relationship between expansion and shear scalars. The physical implications of this model are discussed by using different parameters and their graphs. We conclude that this model corresponds to an accelerated expanding universe for particular values of the parameters.