Cosmological constraints on a dynamical dark energy model in F(Q) gravity

O. Enkhili; S. Dahmani; D. Mhamdi; T. Ouali; A. Errahmani

doi:10.1140/epjc/s10052-024-13143-4

2024 Impact factor 4.8

Particles and Fields

Open Access

Eur. Phys. J. C (2024) 84: 806
https://doi.org/10.1140/epjc/s10052-024-13143-4

Regular Article - Theoretical Physics

Cosmological constraints on a dynamical dark energy model in F(Q) gravity

O. Enkhili^a, S. Dahmani, D. Mhamdi, T. Ouali and A. Errahmani

Laboratory of Physics of Matter and Radiation, Mohammed I University, BP 717, Oujda, Morocco

^a omarenkhili@gmail.com

Received: 2 June 2024
Accepted: 21 July 2024
Published online: 12 August 2024

Abstract

Extended teleparallel gravity, characterized by function F(Q), where Q is the non-metricity scalar, is one of the most promising approaches to general relativity. In this paper, we reexamine a specific dynamical dark energy model, which is indistinguishable from the $Λ$ $\Lambda$ CDM model at the present time and exhibits a special event in the future, within F(Q) gravity. To constrain the free parameters of the model, we perform Markov chain Monte Carlo (MCMC) analysis, using the last data from ${Pantheon}^{+}$ $\hbox {Pantheon}^{+}$ and the latest measurements of the H(z) parameter, combined. On the basis of this analysis, we find that our dynamical dark energy model, in the context of F(Q) gravity, lies in the quintessence regime rather than in the phantom regime, as in the case of general relativity. Furthermore, this behavior affects the future expansion of the Universe, as it becomes decelerating at a $1 σ$ $1\sigma$ confidence level for $z < - 0.5$ $$z<-0.5$$ , showing a bounce at $z_{B} \approx - 0.835$ $z_{\text {B}}\approx -0.835$ . We support our conclusion with a cosmographic analysis.

© The Author(s) 2024

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