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arXiv 1005.4765nlin.CD
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弱色噪声驱动下极限环振子的有效长时间相位动力学

Effective long-time phase dynamics of limit-cycle oscillators driven by weak colored noise

Hiroya Nakao, Jun-nosuke Teramae, Denis S. Goldobin, Yoshiki Kuramoto

摘要:

本文导出了一个有效的白噪声朗之万方程,它描述了弱稳态色噪声作用下极限环振子的长时间相位动力学。有效的漂移和扩散系数给出的振荡器的相位灵敏度和噪声的关联函数,并明确计算的振荡器与正弦相位灵敏度函数驱动的两个典型的有色高斯过程。利用几种类型的随机或混沌噪声的数值模拟的结果进行了验证。由混沌噪声驱动的振子的漂移和扩散系数表现出与振子频率的反常依赖关系,反映了混沌噪声特有的功率谱。

英文摘要:

An effective white-noise Langevin equation is derived that describes long-time phase dynamics of a limit-cycle oscillator subjected to weak stationary colored noise. Effective drift and diffusion coefficients are given in terms of the phase sensitivity of the oscillator and the correlation function of the noise, and are explicitly calculated for oscillators with sinusoidal phase sensitivity functions driven by two typical colored Gaussian processes. The results are verified by numerical simulations using several types of stochastic or chaotic noise. The drift and diffusion coefficients of oscillators driven by chaotic noise exhibit anomalous dependence on the oscillator frequency, reflecting the peculiar power spectrum of the chaotic noise.

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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