| In generic Hamiltonian systems classical transport in the chaotic sea is limited by partial barriers, which allow a flux Φ given by the turnstile area. Quantum mechanically they are even more restrictive for Planck's constant ℏ ≫ Φ, while in the opposite case classical transport is recovered. This transition is qualitatively well understood, however, many quantitative questions are still open. We construct a kicked system with a particularly simple phase-space structure, namely two chaotic regions separated by one dominant partial barrier. This enables us to investigate the properties of eigenfunctions under variation of the ratio Φ / ℏ and to search for a universal scaling. Furthermore we investigate the tunneling through a partial barrier. |
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