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Comment on "Intermittent Synchronization in a Pair of Coupled Chaotic Pendula"

P. Grassberger
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Abstract

In [G. Baker et al., Phys. Rev. Lett. 81, 554 (1998)] a number of supposedly novel and surprising features were observed in a system composed of two periodically driven and asymmetrically coupled pendula. In particular it was claimed that `permanent synchronization ... does not occur except as a numerical artifact'. It was suggested that this might be related to the particular type of coupling. In this comment I want to point out that some of these claims cannot be maintained. The synchronization in this system is precisely of standard blow-out type. The observed intermittency is exactly the on-off intermittency well known from the synchronization of multifractal chaotic attractors.

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P. Grassberger. 1999-06-21. Comment on "Intermittent Synchronization in a Pair of Coupled Chaotic Pendula". https://doi.org/10.1103/physrevlett.82.4146

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