NONLINEAR DYNAMICS IN QUANTUM PHYSICS-THE STUDY OF QUANTUM CHAOS

摘要

We use the quantum action to study the dynamics of quantum system at finite temperature. We construct the quantum action non-perturbatively and find temperature dependent action parameters. Here we apply the quantum action to study quantum chaos. We present a numerical study of a classically chaotic 2-D Hamiltonian system - harmonic oscillators with anharmonic coupling. We compare Poincare sections for the quantum action at finite temperature with those of classical action.