Examining the validity of the minimal varying speed of light model through cosmological observations: Relaxing the null curvature constraint

Article Type

Research Article

Publication Title

Physics of the Dark Universe

Abstract

We revisit a consistency test for the speed of light variability, using the latest cosmological observations. This exercise can serve as a new diagnostics for the standard cosmological model and distinguish between the minimal varying speed of light in the Friedmann-Lemaître-Robertson-Walker universe. We deploy Gaussian processes to reconstruct cosmic distances and ages in the redshift range 01 with a particular reconstruction kernel when a-BAO data are included. Still, we ascribe no statistical significance to this result bearing in mind the degeneracy between the associated priors for combined analysis, and incompleteness of the a-BAO data set at higher z.

DOI

10.1016/j.dark.2023.101380

Publication Date

2-1-2024

Comments

Open Access; Green Open Access

Link to Full Text

Share

COinS