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Brownian motion of spiral waves driven by spatiotemporal structured noise

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Spiral chemical waves subjected to a spatiotemporal random excitability are experimentally and numerically investigated in relation to the light-sensitive Belousov-Zhabotinsky reaction. Brownian motion is identified and characterized by an effective diffusion coefficient which shows a rather complex dependence on the time and length scales of the noise relative to those of the spiral. A kinematically based model is proposed whose results are in good qualitative agreement with experiments and numerics.

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Reproducció digital del document publicat en format paper, proporcionada per APS i http://dx.doi.org/10.1103/PhysRevLett.84.2734

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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Brownian motion of spiral waves driven by spatiotemporal structured noise