Spiral motion in a noisy complex ginzburg-landau equation

Igor S. Aranson; Hugues Chaté; Lei Han Tang

doi:10.1103/PhysRevLett.80.2646

Spiral motion in a noisy complex ginzburg-landau equation

Igor S. Aranson, Hugues Chaté, 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 quasifrozen states in the noiseless CGLE are susceptible to unpaired vortex excitation at any nonzero noise strength.

Original language	English (US)
Pages (from-to)	2646-2649
Number of pages	4
Journal	Physical review letters
Volume	80
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.80.2646
State	Published - 1998

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.80.2646

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title = "Spiral motion in a noisy complex ginzburg-landau equation",

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

author = "Aranson, {Igor S.} and Hugues Chat{\'e} and Tang, {Lei Han}",

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AB - 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.

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Spiral motion in a noisy complex ginzburg-landau equation

Abstract

All Science Journal Classification (ASJC) codes

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