Two-level Friedrichs Model and kaonic phenomenology

Maurice Courbage (1) , Thomas Durt (2) , Seyed Majid Saberi Fathi (1)

1 MSC - Matière et Systèmes Complexes
2 TENA-TONA - Applied Physics and Photonics Department

In the present Letter, we study in the framework of the Friedrichs model the evolution of a two-level system coupled to a continuum. This unitary evolution possesses a non-unitary component with a non-Hermitian effective Hamiltonian. We show that this model is well adapted in order to describe kaon phenomenology (oscillation, regeneration) and leads to a CP violation, although in this case the prediction is not quantitatively quite satisfying.

Domaines: Biomécanique [physics.med-ph]; Biomécanique [physics.med-ph]

Maurice Courbage, Thomas Durt, Seyed Majid Saberi Fathi. Two-level Friedrichs Model and kaonic phenomenology. Physics Letters A, 2007, 362, pp.100-104. ⟨10.1016/j.physleta.2006.09.102⟩. ⟨hal-00135121⟩