Speaker
Yeray Garcia Del Castillo
Description
Direct detection of the cosmic neutrino background (CνB) provides a unique window into the early Universe but remains experimentally challenging. I will present a study of CνB-induced coherent transitions in polarised nuclear spin samples, described within an open quantum system framework that includes realistic experimental effects such as dephasing and imperfect polarisation. Using an efficient numerical method that enables the treatment of very large spin ensembles, I will forecast the sensitivity of future experiments to the local CνB overdensity. I will show that experiments such as CASPEr, while primarily designed for axion dark matter searches, can establish competitive constraints on this parameter.
Author
Yeray Garcia Del Castillo