Testing -gravity models with DESI DR2 2025-BAO and other cosmological data
Phys. Rev. D 112, 023554 – Published 31 July, 2025
DOI: https://doi.org/10.1103/gtrg-56fj
Abstract
Motivated by new baryon acoustic oscillation (BAO) data and the significant results recently published by the DESI DR2 Collaboration, this study presents a Markov chain Monte Carlo analysis of all currently viable models using this new dataset and compares its constraining power with that of previous BAO compilations. A corresponding Bayesian model comparison is then carried out. The results reveal, for the first time, very strong statistical evidence in favor of models over the standard scenario. The analysis also incorporates data from cosmic chronometers and the latest supernovae compilation.