This volume covers a wide range of problems in the quantum mechanics of non-integrable systems presented by experts in the field. The main part of the work concerns quantum chaos, and dynamical aspects of chaos in particular. Among the subjects which are treated are: periodic perturbations, small denominators in quantum mechanics, tunneling in the presence of a periodic perturbation, chaotic scattering, quantum maps, level statistics of chaotic systems and random matrices. The papers are concerned with mathematically rigorous derivations of results, as well as with their physical...