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arXiv 0907.0511cond-mat.stat-mechnlin.PS
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一维相位耦合振子链的普适性

Universality in the one-dimensional chain of phase-coupled oscillators

Tony E. Lee, G. Refael, M. C. Cross, Oleg Kogan, Jeffrey L. Rogers

摘要:

本文应用最近发展起来的重整化群(RG)方法,研究了弱随机条件下一维相位耦合振子链的同步。RG预测了具有随机分布频率和耦合的振荡器如何形成频率同步的集群。虽然RG最初是为强随机性,即分布长尾,我们发现很好的协议,即使在政权的弱随机性的数值模拟。我们使用的RG流来推导相关长度的尺度与耦合分布的宽度在大耦合的限制。这导致了具有相同临界指数$ν$的分布的普适性类的识别。我们还发现小耦合的普遍缩放。最后,我们表明,RG流的特点是一个通用的方法,以非同步的固定点,这提供了物理洞察低频集群。

英文摘要:

We apply a recently developed renormalization group (RG) method to study synchronization in a one-dimensional chain of phase-coupled oscillators in the regime of weak randomness. The RG predicts how oscillators with randomly distributed frequencies and couplings form frequency-synchronized clusters. Although the RG was originally intended for strong randomness, i.e. for distributions with long tails, we find good agreement with numerical simulations even in the regime of weak randomness. We use the RG flow to derive how the correlation length scales with the width of the coupling distribution in the limit of large coupling. This leads to the identification of a universality class of distributions with the same critical exponent $ν$. We also find universal scaling for small coupling. Finally, we show that the RG flow is characterized by a universal approach to the unsynchronized fixed point, which provides physical insight into low-frequency clusters.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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