Constraints on power law and exponential models in f(Q) gravity

Résumé fourni par la source

In this paper, we observationally test the f ( Q ) gravity model at both background and perturbation levels using Pantheon + , Hubble measurements, and Redshift Space Distortion Data. We obtain the best-fit parameters by solving numerically the modified Friedmann equations for two distinct cosmological models of f ( Q ) gravity namely the Power law and Exponential models. This involves performing a Markov Chain Monte Carlo analysis for these specific forms of f ( Q ) . To evaluate the statistical significance of the f ( Q ) gravity models, we use the Bayesian and corrected Akaike Information Criteria. Our results indicate that the Exponential model in f ( Q ) gravity is statistically favored over both the Power-law model and the ΛCDM model.

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