Condition of stochasticity in quantum nonlinear systems: II. Kinetic description of quantum K-systems

摘要: Abstract Quantum K -systems can usually be regarded as the systems which are conventional at ℏ = 0, i.e. they have property of mixing trajectories in a phase space. The master kinetic equation without priori random assumptions is derived quasiclassical approximation for quantum -systems. It shown how nondiagonal elements density matrix decay and memory about initial conditions vanishes. A nonlinear oscilator perturbed by periodically time-dependent field considered an example.