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 $\Lambda$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

Assistant Professor of Theoretical Physics (RTT)

Theoretical physicist working across particle physics, astrophysics, cosmology, and experimental searches.