Spiral motion in a noisy complex ginzburg-landau equation

Igor S. Aranson, Hugues Chaté, Lei-Han Tang

Research output: Contribution to journalJournal articlepeer-review

34 Citations (Scopus)


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 quasifrozen states in the noiseless CGLE are susceptible to unpaired vortex excitation at any nonzero noise strength.

Original languageEnglish
Pages (from-to)2646-2649
Number of pages4
JournalPhysical Review Letters
Issue number12
Publication statusPublished - 1998

Scopus Subject Areas

  • Physics and Astronomy(all)


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