CPT/Lorentz Invariance Violation and Quantum Field Theory
  Analogies 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 discussed 
Paola Arias, Ashok Das, Jorge Gamboa, Justo Lopez-Sarrion and Fernando   Mendez