Periodic orbit quantization of chaotic systems with strong pruning

Details Periodic orbit quantization of chaotic systems with strong pruning Periodic orbit quantization of chaotic systems with strong pruning

2002-03-13

arxiv.org/abs/nlin/0203023v1

Phys. Lett. A 297 (2002) 87

Nonlinear Sciences

Chaotic Dynamics

9 pages, 3 figures, submitted to Phys. Lett. A

Scientific paper

10.1016/S0375-9601(02)00282-7

The three-disk system, which for many years has served as a paradigm for the usefulness of cycle expansion methods, represents an extremely hard problem to semiclassical quantization when the disks are moved closer and closer together, since (1) pruning of orbits sets in, rendering the symbolic code incomplete, and (2) the number of orbits necessary to obtain accurate semiclassical eigenvalues proliferates exponentially. In this note we show that an alternative method, viz. harmonic inversion, which does not rely on the existence of complete symbolic dynamics or other specific properties of systems, provides a key to solving the problem of semiclassical quantization of systems with strong pruning. For the closed three-disk system we demonstrate how harmonic inversion, augmented by a signal cross-correlation technique, allows one to semiclassically calculate the energies up to the 28th excited state with high accuracy.

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