Diffusion and chaos in a bouncing ball model

preprint2020arXivOpen access

Abstract

We consider the vertical motion of a free falling ball bouncing elastically on a racket moving in the vertical direction according to a regular periodic function ff. We give a sufficient condition on the second derivative of ff giving motions with arbitrarily large amplitude and chaotic dynamics in the sense of positive entropy. We get the results by breaking many invariant curves of the corresponding map using converse KAM techniques.

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