Subdynamics through Time Scales and Scattering Maps in Quantum Field Theory

Abstract

It is argued that the dynamics of an isolated system, due to the concrete procedure by which it is separated from the environment, has a non-Hamiltonian contribution. By a unified quantum field theoretical treatment of typical subdynamics, e.g., hydrodynamics, kinetic theory, master equation for a particle interacting with matter, we look for the structure of this more general dynamics.Comment: 16 pages, latex, no figures, to appear in the Proceedings of the Third International Conference on Quantum Communication & Measurement 1996 (Hakone, Japan