We consider departures from hamiltonian dynamics in the evolution of neutral kaons due to their interactions with the environment that generate entanglement among them. Talk presented at the Conference QUARKS2000, Pushkin, Saint Petersburg. ∗ e-mail: [email protected]

Wojciech Broniowski, Alexandr E. Dorokhov, Enrique Ruiz Arriola Institute of Physics, Jan Kochanowski University, PL-25406 Kielce, Poland The H. Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, PL-31342 Kraków, Poland Joint Institute for Nuclear Research, Bogoliubov Laboratory of Theoretical Physics, 114980, Moscow region, Dubna, Russia Departamento de F́ısica Atómica, M...

It is pointed out that models with condensates have nontrivial renormalization group flow on the tree level. The infinitesimal form of the tree level renormalization group equation is obtained and solved numerically for the φ4 model in the symmetry broken phase. We find an attractive infrared fixed ∗[email protected] †[email protected] ‡[email protected]