Tunable pinning of burst waves in extended systems with discrete sources

被引：42

作者：

Mitkov, I ^{[1
]}

Kladko, K

Pearson, JE

机构：

[1] Univ Calif Los Alamos Natl Lab, Ctr Nonlinear Studies, Computat Sci Methods Grp, Los Alamos, NM 87545 USA

[2] Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.81.5453

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the dynamics of waves in a system of diffusively coupled discrete nonlinear sources. We show that the system exhibits burst waves which are periodic in a traveling-wave reference frame. We demonstrate that the burst waves are pinned if the diffusive coupling is below a critical value. When the coupling crosses the critical value the system undergoes a depinning instability via a saddle-node bifur cation, and the wave begins to move. We obtain the universal scaling for the mean wave velocity just above threshold. [S0031-9007(98)07893-4].

引用

页码：5453 / 5456

页数：4

共 20 条

[11] DYNAMICS OF CHARGE-DENSITY WAVE .1. IMPURITY PINNING IN A SINGLE CHAIN [J].