Bayesian Evidence for Log-Periodic Modulation of the Cosmic Structure Growth Rate: Constraints from DESI DR1 Full-Shape, Peculiar Velocity Survey, and Extended fσ₈ Compilations

Puntos clave

• This research aims to explore log-periodic modulation effects on the cosmic structure growth rate using Bayesian analysis.
• Performed MCMC Bayesian analysis on cosmic structure growth rate fσ₈(z) measurements.
• Utilized 18 independent measurements, including DESI DR1 Full-Shape and Peculiar Velocity data.
• Examined log-periodic modulation effects against extensive cosmic datasets.
• Identified significant log-periodic modulations in cosmic structure growth rate.
• Demonstrated strong correlation with independent cosmic measurements.
• Provided constraints on cosmic growth dynamics utilizing Bayesian methods.