LRS Bianchi-I Anisotropic Cosmological Model with Dominance of Dark Energy

TL;DR

This paper develops an anisotropic Bianchi-I cosmological model with dark energy dominance, showing that anisotropic dark energy distribution can explain the Universe's accelerated expansion.

Contribution

It introduces a deterministic anisotropic cosmological model assuming shear scalar proportional to expansion scalar, linking anisotropy to dark energy effects.

Findings

Anisotropic dark energy leads to accelerated cosmic expansion.

The model relates metric potentials through a power-law relation.

Physical analysis supports dark energy's role in current acceleration.

Abstract

The present study deals with spatially homogeneous and anisotropic locally rotationally symmetric (LRS) Bianchi type I cosmological model with dominance of dark energy. To get the deterministic model of Universe, we assume that the shear scalar $(\sigma)$ in the model is proportional to expansion scalar $(\theta)$. This condition leads to $A=B^{n}$, where $A$,\;$B$ are metric potential and $n$ is positive constant. It has been found that the anisotropic distribution of dark energy leads to the present accelerated expansion of Universe. The physical behavior of the Universe has been discussed in detail.