Global versus local billiard level dynamics: The limits of universality

Details Global versus local billiard level dynamics: The limits of universality Global versus local billiard level dynamics: The limits of universality

1999-01-27

arxiv.org/abs/cond-mat/9901307v2

Phys. Rev. Lett. 82, 2026 (1999)

Physics

Condensed Matter

Scientific paper

10.1103/PhysRevLett.82.2026

Level dynamics measurements have been performed in a Sinai microwave billiard as a function of a single length, as well as in rectangular billiards with randomly distributed disks as a function of the position of one disk. In the first case the field distribution is changed globally, and velocity distributions and autocorrelation functions are well described by universal functions derived by Simons and Altshuler. In the second case the field distribution is changed locally. Here another type of universal correlations is observed. It can be derived under the assumption that chaotic wave functions may be described by a random superposition of plane waves.

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