Isotropization of locally rotationally symmetric Bianchi-I universe in f(Q)-gravity
Document Type
Article
Publication Date
1-1-2022
Abstract
Despite having the somewhat successful description of accelerated cosmology, the early evolution of the universe always challenges mankind. Our promising approach lies in a new class of symmetric teleparallel theory of gravity named f(Q), where the non-metricity scalar Q is responsible for the gravitational interaction, which may resolve some of the issues. To study the early evolution of the universe, we presume an anisotropic locally rotationally symmetric (LRS) Bianchi-I spacetime and derive the motion equations. We discuss the profiles of energy density, equation of state and skewness parameter and observe that our models archive anisotropic spatial geometry in the early phase of the universe with a possible presence of anisotropic fluid and as time goes on, even in the presence of an anisotropic fluid, the universe could approach isotropy due to inflation and the anisotropy of the fluid fades away at the same time.
Keywords
Probe WMAP observations, Inflationary universe, Flatness, Gravity, Horizon, Models
Divisions
MathematicalSciences
Funders
FRGS research grant [FRGS/1/2021/STG06/UTAR/02/1],Department of Science & Technology (India) [DST/INSPIRE Fellowship/2018/IF180676]
Publication Title
The European Physical Journal C
Volume
82
Issue
1
Publisher
Springer
Publisher Location
ONE NEW YORK PLAZA, SUITE 4600, NEW YORK, NY, UNITED STATES