Shabani, Hamid and De, Avik and Loo, Tee-How (2025) Emergent universe in f(Q) gravity theories. Annals of Physics, 473. p. 169900. ISSN 0003-4916, DOI https://doi.org/10.1016/j.aop.2024.169900.
Full text not available from this repository.Abstract
One resolution of the ancient cosmic singularity, i.e., the Big Bang Singularity (BBS), is to assume an inflationary stage preceded by a long enough static state in which the universe and its physical properties would oscillate around certain equilibrium points. The early period is referred to as the Einstein Static (ES) Universe phase, which characterizes a static phase with positive spatial curvature. A stable Einstein static state can serve as a substitute for BBS, followed by an inflationary period known as the Emergent Scenario. The initial need has not been fulfilled within the context of General Relativity, prompting the investigation of modified theories of gravity. The current research aims to find such a solution within the framework of symmetric teleparallel gravity, specifically in the trendy f(Q) theories. An analysis has been conducted to investigate stable solutions for both positively and negatively curved spatial FRW universes, in the presence of a perfect fluid, by utilizing various torsion-free and curvature-free affine connections. Additionally, we propose a method to facilitate an exit from a stable ES to a subsequent inflationary phase. We demonstrate that f(Q) gravity theories have the ability to accurately depict the emergence of the universe.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Higher Education (MoHE) , through the Fundamental Research Grant Scheme (FRGS/1/2023/STG07/UM/02/3) ; (FP074-2023) |
| Uncontrolled Keywords: | Emergent universe; Symmetric teleparallel gravity; Stability of the Einstein static state |
| Subjects: | Q Science > QA Mathematics Q Science > QC Physics |
| Divisions: | Faculty of Science > Institute of Mathematical Sciences |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 03 Mar 2025 06:46 |
| Last Modified: | 03 Mar 2025 06:46 |
| URI: | http://eprints.um.edu.my/id/eprint/47776 |
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