SAIP2025

Testing $f(Q)$ gravity as a solution for the $H_0$ and $S_8$ tensions

Not scheduled

1h

Solomon Mahlangu House (University of the Witwatersrand, Johannesburg)

Oral Presentation Track G - Theoretical and Computational Physics Theoretical and Computational Physics

Speaker

Dumiso Mithi

Description

The persistent discrepancies between early and late universe cosmological measurements of the Hubble parameter ($H_0$) and the matter clustering parameter ($S_8$) pose significant challenges to current physics. In this study, we take into account such discrepancies to solve through the modified theory of gravity known as $f(Q)$ gravity (a symmetric teleparallel) framework where gravity is described by non-metricity $Q$, which offers a promising alternative to resolve these tensions. We will investigate the viability of $f(Q)$ gravity confronting the theory with recent cosmological data sets from both early and late measurements. Our analysis determines whether $f(Q)$ gravity can simultaneously reconcile the tensions of the $H_0$ and $S_8$ parameters while providing a theoretically compelling alternative to the $\Lambda$CDM model. The results provide crucial insights into modified gravity's capacity to address fundamental challenges in modern cosmology.