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Channelling chaos by building barriers

Cristel Chandre·Guido Ciraolo·Fabrice Doveil·Ricardo Lima·Alessandro Macor·Michel Vittot
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Abstract

Chaos often represents a severe obstacle for the set-up of many-body experiments, e.g., in fusion plasmas or turbulent flows. We propose a strategy to control chaotic diffusion in conservative systems. The core of our approach is a small apt modification of the system which channels chaos by building barriers to diffusion. It leads to practical prescriptions for an experimental apparatus to operate in a regular regime (drastic enhancement of confinement). The experimental realization of this control on a Travelling Wave Tube opens the possibility to practically achieve the control of a wide range of systems at a low additional cost of energy.

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Cristel Chandre, Guido Ciraolo, Fabrice Doveil, Ricardo Lima, Alessandro Macor, Michel Vittot. 2004-09-27. Channelling chaos by building barriers. https://doi.org/10.1103/physrevlett.94.074101

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