Maria Archidiacono

Maria Archidiacono

After reviewing the role of neutrinos in cosmology and the current observational puzzles, I will present a general framework based on recoupling dark radiation and show how it can be realized by sterile neutrinos interacting through a light pseudoscalar mediator. I will discuss how this scenario modifies the CMB phenomenology, reconciles CMB and DESI BAO measurements, alleviates the apparent conflict between cosmological and laboratory neutrino mass determinations, and reduces the Hubble tension.