Signal amplification enhanced by large phase disorder in coupled bistable units,Physical Review E

当前位置： X-MOL 学术 › Phys. Rev. E › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Signal amplification enhanced by large phase disorder in coupled bistable units
Physical Review E ( IF 2.2 ) Pub Date : 2021-09-07 , DOI: 10.1103/physreve.104.034204
Xiaoming Liang ₁ , Xiyun Zhang ₂

Affiliation

We study the maximum response of network-coupled bistable units to subthreshold signals focusing on the effect of phase disorder. We find that for signals with large levels of phase disorder, the network exhibits an enhanced response for intermediate coupling strength, while generating a damped response for low levels of phase disorder. We observe that the large phase-disorder-enhanced response depends mainly on the signal intensity but not on the signal frequency or the network topology. We show that a zero average activity of the units caused by large phase disorder plays a key role in the enhancement of the maximum response. With a detailed analysis, we demonstrate that large phase disorder can suppress the synchronization of the units, leading to the observed resonancelike response. Finally, we examine the robustness of this phenomenon to the unit bistability, the initial phase distribution, and various signal waveform. Our result demonstrates a potential benefit of phase disorder on signal amplification in complex systems.

中文翻译：

耦合双稳态单元中大相位无序增强的信号放大

我们研究了网络耦合双稳态单元对亚阈值信号的最大响应，重点是相位混乱的影响。我们发现，对于相位紊乱程度较大的信号，网络对中等耦合强度表现出增强的响应，同时对相位紊乱程度较低的情况产生阻尼响应。我们观察到大的相位紊乱增强响应主要取决于信号强度，而不取决于信号频率或网络拓扑。我们表明，由大相位无序引起的单元的零平均活动在增强最大响应中起着关键作用。通过详细的分析，我们证明了大的相位紊乱可以抑制单元的同步，从而导致观察到的类似共振的响应。最后，我们检查了这种现象对单元双稳态、初始相位分布和各种信号波形的鲁棒性。我们的结果证明了相位无序对复杂系统中信号放大的潜在好处。

更新日期：2021-09-07

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11