Speaker
Description
I will discuss how the new cosmological Baryon Acoustic Oscillations (BAO) measurements by the DESI
collaboration have changed the status of the so-called Hubble tension, i.e. the mismatch between global
cosmological measurements and local measurements of H0 (by the SH0ES Collaboration). In particular, in
models with Dark Radiation the tension decreases to a moderate level, around 2 sigma and down to 1.7 sigma,
depending on the specific dataset and realization. This allows a combination of cosmological data with the
local SH0ES measurement, leading to a 4-5 sigma evidence for a new Dark Radiation component. I will
also discuss the status of Dark Energy, that points to a time-varying equation of state at very late times,
and neutrino mass fits with the new DESI dataset.
