http://arxiv.org/abs/2111.08289
We openly study dark energy through the viewpoints of parametric and nonparametric analyses of late-time cosmological data. We consider three Hubble parameter priors reflecting the Hubble tension and make use of two phenomenological functions, namely, a normalized dark energy density and a compactified dark energy equation of state. We predict the shape of both functions and present new constraints on the dark energy equation of state. The results hint at dark energy evolution regardless of the choice of the method and of the priors. Given that dark energy evolution is arrived at by drastically different approaches, it emphasizes the result that the cosmological data prefers a nontrivial evolution.
R. Bernardo, D. Grandón, J. Said, et. al.
Wed, 17 Nov 21
45/64
Comments: 29 pages, 12 figures, comments welcome