Observational constraints on scale-dependent cosmology

Alvarez, Pedro D.; Koch, Benjamin

Abstract

This paper examines a cosmological model of scale-dependent gravity. The gravitational action is taken to be the Einstein–Hilbert term supplemented with a cosmological constant, where the couplings, Gk and ?k, run with the energy scale k. Also, notice that, by construction, our formalism recovers general relativity when in the limit of constant Newton's coupling. Two sub-models based on the scale-dependent cosmological model are confronted with recent observational data from: (i) the Hubble parameter H(z), (ii) distance modulus ?(z), and (iii) baryon acoustic scale evolution as functions of redshift (BAO). The viability of the model is discussed, obtaining the best-fit parameters and the maximum likelihood contours for these observables. Finally, a joint analysis is performed for H(z)+?(z)?BAO. © 2024 The Authors

Más información

Título según WOS: Observational constraints on scale-dependent cosmology
Título según SCOPUS: Observational constraints on scale-dependent cosmology
Título de la Revista: Physics of the Dark Universe
Volumen: 45
Editorial: Elsevier B.V.
Fecha de publicación: 2024
Idioma: English
DOI:

10.1016/j.dark.2024.101531

Notas: ISI, SCOPUS