2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/120365Neutrinos allow for a test of the hypothesis that the fermions of the Standard Model have Fermi-point splitting, analogous to the fermionic quasi-particles of certain condensed-matter systems. If present, the corresponding Lorentz-violating terms in the Hamiltonian may provide a new source of T and CP violation in the leptonic sector, which is not directly related to mass.Talk presented at the Workshop on Exotic Physics with Neutrino Telescopes, Uppsala, 20-22 September 2006High Energy Physics - PhenomenologyHigh Energy Physics - ExperimentHigh Energy Physics - Theorytext