Spiral wave chimera in two-dimensional nonlocally coupled Fitzhugh-Nagumo systems

被引：37

作者：

Guo, Shuangjian ^{[1
]}

Dai, Qionglin ^{[1
]}

Cheng, Hongyan ^{[1
]}

Li, Haihong ^{[1
]}

Xie, Fagen ^{[2
]}

Yang, Junzhong ^{[1
]}

机构：

[1] Beijing Univ Posts & Telecommun, Sch Sci, Beijing 100876, Peoples R China

[2] Kaiser Permanente Southern Calif, Dept Res & Evaluat, Pasadena, CA 91101 USA

来源：

CHAOS SOLITONS & FRACTALS | 2018年 / 114卷

基金：

中国国家自然科学基金;

关键词：

Chimera; Spiral wave chimera; Fitzhugh-Nagumo oscillators; TURBULENCE DRIVEN; CARDIAC TISSUE; MODEL; BREAKUP; INSTABILITY; TRANSITION; DYNAMICS; STATES;

D O I：

10.1016/j.chaos.2018.07.029

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

Spiral wave chimeras with spatially extended unsynchronized cores have been reported in nonlocally coupled phase oscillators and chaotic oscillators. Here, we investigate the two-dimensional nonlocally coupled FitzHugh-Nagumo oscillators with open boundary conditions. Rich dynamics of spiral wave chimeras is discovered numerically. Besides outwardly propagating and inwardly propagating single-spiral wave chimeras, we find the double-spiral wave chimera with two spiral chimeras rotating with each other and the breakup of spiral wave chimeras. We also find a transition between a normal spiral wave with a phase singularity at its center and spiral wave chimera. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：394 / 399

页数：6