String Cosmology with Magnetic field in Anisotropic Space-time

TL;DR

This paper investigates how magnetic fields influence string cosmology within an anisotropic Bianchi type-V universe, analyzing various string models and their physical properties with and without magnetic effects.

Contribution

It introduces magnetic fields into string cosmology models and solves the field equations for different string types in an anisotropic setting.

Findings

Magnetic fields significantly affect the evolution of string cosmology models.

Solutions are obtained for geometric, Takabayashi, and Reddy string models with detailed properties.

The study compares models with and without magnetic fields to understand their physical implications.

Abstract

In this paper we study the effect of the magnetic field in string cosmology for a spatially homogenous and anisotropic Bianchi type -V space-time model. In order to study the effect of magnetic field, the standard form of the energy momentum tensor for cosmic strings is modified by including an additional term for magnetic field. The magnetic field is due to an electric current produced along the x-axis with infinite electrical conductivity. The field equations are solved for different string models such as geometric string (Nambu string), Takabayashi string (p-string) and Reddy string using string equation of state. We also find the solution for string models with uniform energy density. The physical and geometrical properties of each string model with and without magnetic field are discussed in detail.