Late time transitions in the quintessence field and the H0 tension

Abstract

We consider a quintessence field which transitions from a matter-like to a cosmological constant behaviour between recombination and the present time. We aim at easing the tension in the measurement of the present Hubble rate, and we assess the $\mathrm{\Lambda }$CDM model properly enlarged to include our quintessence field against cosmological observations. The model does not address the scope we proposed. This result allows us to exclude a class of quintessential models as a solution to the tension in the Hubble constant measurements.

Luca Visinelli

Tenure-track Assistant Professor, Università degli Studi di Salerno.

PhD in Physics, working on Particle Astrophysics and Dark Matter modeling.