Spiral motion in a noisy complex Ginzburg-Landau equation

被引：28
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
收藏
页码：2646 / 2649
页数：4
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