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Weyl law for open systems with sharply divided mixed phase space
Akihiro Ishii1, Akira Akaishi, Akira Shudo
1Department of Physics, Tokyo Metropolitan University, Minami-Osawa, Hachioji, Tokyo, Japan.
Abstract:
A generalization of the Weyl law to systems with a sharply divided mixed phase space is proposed. The ansatz is composed of the usual Weyl term which counts the number of states in regular islands and a term associated with sticky regions in phase space. For a piecewise linear map, we numerically check the validity of our hypothesis, and find good agreement not only for the case with a sharply divided phase space but also for the case where tiny island chains surround the main regular island. For the latter case, a nontrivial power law exponent appears in the survival probability of classical escaping orbits, which may provide a clue to develop the Weyl law for more generic mixed systems.
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