2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/196299Analogies between the noncommutative harmonic oscillator and noncommutative fields are analyzed. Following this analogy we construct examples of quantum fields theories with explicit CPT and Lorentz symmetry breaking. Some applications to baryogenesis and neutrino oscillation are also discussedContribution to the Fifth International Conference on Mathematical Methods in Physics, Rio de Janeiro, April 24-28 2006High Energy Physics - Theorytext