Speaker
Yuber F Perez-Gonzalez
Description
Neutrinos have been continuously emitted since the first supernova explosions, forming a persistent background known as the Diffuse Supernova Neutrino Background (DSNB), which is actively being searched for in various experiments. Notably, these neutrinos are the oldest within experimental reach, raising the question of what new physics, whether effects that influenced neutrinos in the early Universe or slow-evolving properties that manifest over time, could be probed following the detection of the DSNB. In this context, in this talk we explore two generic scenarios: neutrinos with masses that vary in the early Universe and the possibility that neutrinos exhibit a pseudo-Dirac nature.
