Cosmic Acceleration and Anisotropic models with Magnetic field

TL;DR

This paper explores how magnetic fields influence the acceleration of the universe in anisotropic cosmological models, showing magnetic fields can induce acceleration without dark energy, but their effect diminishes when dark energy is present.

Contribution

It investigates the role of magnetic fields in accelerating anisotropic universe models with and without dark energy, highlighting conditions under which magnetic fields can drive acceleration.

Findings

Magnetic fields can induce acceleration in models without dark energy.

Presence of dark energy limits the influence of magnetic fields.

Magnetic fields support accelerated expansion even with linear Hubble parameter relations.

Abstract

Plane symmetric cosmological models are investigated with or without any dark energy components in the field equations. Keeping an eye on the recent observational constraints concerning the accelerating phase of expansion of the universe, the role of magnetic field is assessed. In the absence of dark energy components, magnetic field can favour an accelerating model even if we take a linear relationship between the directional Hubble parameters. In presence of dark energy components in the form of a time varying cosmological constant, the influence of magnetic field is found to be limited.