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Spiral Motion in a Noisy Complex Ginzburg-Landau Equation

Igor Aranson·Hugues Chate·Lei Han Tang
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Abstract

The response of spiral waves to external perturbations in a stable regime of the two-dimensional complex Ginzburg-Landau equation (CGLE) is investigated. It is shown that the spiral core has a finite mobility and performs Brownian motion when driven by white noise. Combined with simulation results, this suggests that defect-free and quasi-frozen states in the noiseless CGLE are unstable against free vortex excitation at any non-zero noise strength.

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Igor Aranson, Hugues Chate, Lei Han Tang. 1997-09-25. Spiral Motion in a Noisy Complex Ginzburg-Landau Equation. https://doi.org/10.1103/physrevlett.80.2646

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