title: Dynamical tunneling in many-dimensional chaotic systems.
abstract: We investigate dynamical tunneling in many-dimensional systems using a quasiperiodically modulated kicked rotor, and find that the tunneling rate from the torus to the chaotic region is drastically enhanced when the chaotic states become delocalized as a result of the Anderson transition. This result strongly suggests that amphibious states, which were discovered for a one-dimensional kicked rotor with transporting islands [L. Hufnagel, Phys. Rev. Lett. 89, 154101 (2002)], quite commonly appear in many-dimensional systems.
authors.affiliation: Department of Physics, Tokyo Metropolitan University, Minami-Osawa, Hachioji, Tokyo 192-0397, Japan.
authors.forename: Akiyuki
authors.initials: A
authors.lastname: Ishikawa
authors.forename: Atushi
authors.initials: A
authors.lastname: Tanaka
authors.forename: Akira
authors.initials: A
authors.lastname: Shudo