BENEVENTO G.

Late times dark energy transitions at redshifts z 0.1 can raise the predicted value of the Hubble constant to the SH0ES value, 74.03±1.42 (km s-1 Mpc-1) or more, while providing an equally good fit as ΛCDM at 67.73±0.41 to higher redshift data, in particular from the cosmic microwave background and baryon acoustic oscillations. These models...

We discuss the ability of a dark fluid becoming relevant around the time of matter-radiation equality to significantly relieve the tension between local measurements of the Hubble constant and cosmic microwave background (CMB) inference, within the ΛCDM model. We show that the gravitational impact of acoustic oscillations in the dark fluid...

We investigate cosmological constraints on K-mouflage models of modified gravity. We consider two scenarios: one where the background evolution is free to deviate from ΛCDM (K-mouflage) and another one which reproduces a ΛCDM expansion (K-mimic), implementing both of them into the EFTCAMB code. We discuss the main observational signatures of...