FRIEDRICHS DYNAMICS APPLIED TO KAONS DECAY AND ENTANGLEMENT
We develop a hamiltonian dynamical approach to decoherence using a Friedrichs model descrbing the interaction of a simple system of finite degrees of freedoms with a large system with continuous degrees of freedoms. The entanglment is due to the above interaction. The model-system is also successfully applied to Kaons decay and provides satisfying estimate of the experimental CP violation parameter in the markovian approximation. The model provides also rich description including decay, oscillations and regereneration. We also report on some experiments demonstrating entanglement in mesonic particles.The celebrated Kardar-Parisi-Zhang equation, initially derived as a model to describe the kinetic roughening of a growing interface, has given rise to intense theoretical investigations for over two decades since it stands as a simple -yet unsolved- model for scaling phenomena and non-equilibrium phase transitions.