Cosmic structure growth and perturbation analysis in logarithmic f(Q) gravity

Title

Cosmic structure growth and perturbation analysis in logarithmic f(Q) gravity

Creator

Sudharani, L.; Kavya, N.S.; Venkatesha, V.

Description

In this work, we explore a cosmological model within the framework of modified gravity, specifically a logarithmic form of f(Q) gravity. Using recent observational datasets including RSD and DESI, we constrain the model parameters via Markov Chain Monte Carlo (MCMC) techniques. Our analysis focuses on both background and perturbation-level cosmological diagnostics, evaluating the evolution of cosmographic parameters and the growth rate of structure through f?8. The results demonstrate consistency with observational data, particularly supporting a quintessence-like accelerated expansion. Additionally, the model addresses the S8 tension and provides insights into the late-time behavior of dark energy. The Author(s) 2025.

Source

European Physical Journal C;Volume;85;Issue;9;Article No.;997;

Date

01-01-2025

Publisher

Springer Nature

Coverage

Sudharani L., Department of P.G. Studies and Research in Mathematics, Kuvempu University, Shankaraghatta, Karnataka, Shivamogga, 577451, India; Kavya N.S., Center for Mathematical Needs, Department of Mathematics, CHRIST (Deemed to be University), Bengaluru, 560029, India; Venkatesha V., Department of P.G. Studies and Research in Mathematics, Kuvempu University, Shankaraghatta, Karnataka, Shivamogga, 577451, India

Rights

All Open Access; Gold Open Access; Green Open Access

Relation

ISSN: 14346044;

Format

online

Language

English

Type

Article

Identifier

https://doi.org/10.1140/epjc/s10052-025-14724-7

https://www.scopus.com/pages/publications/105016674533?origin=resultslist