Spiral motion in a noisy complex Ginzburg-Landau equation

被引：30

作者：

Aranson, IS

Chate, H

Tang, LH

机构：

[1] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

[2] CENS, CEA, Serv Phys Etat Condense, F-91191 Gif Sur Yvette, France

[3] Hong Kong Baptist Univ, Dept Phys, Hong Kong, Hong Kong

[4] Hong Kong Baptist Univ, Ctr Nonlinear & Complex Syst, Hong Kong, Hong Kong

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.80.2646

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页码：2646 / 2649

页数：4

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