of freedom, we show that this model leads to a CP violation that qualitatively

fits with experimental data improving previous numerical estimates. We also

discuss the relation of our model to other models of open systems....

In this paper, we use the time-super-operator formalism and the two-level

Friedrichs model to obtain a phenomenological model of mesons decay. Our

approach provides a fairly good estimation of the CP-symmetry ...

In this paper, we propose a simple quantum model of the kaons decay providing an estimate of the

CP symmetry violation parameter. We use the two-level Friedrich’s Hamiltonian model to obtain a

good quantitative ...