Levy噪声和有色噪声对kick驱动模型动力学的影响  

Investigating the Influence of Levy Timing Noise and Colored Amplitude Noises on Kick Driven Model Dynamics

作　　者：傅志毅 秦品权 FU Zhi-yi;QIN Pin-quan(School of Science,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学理学院,武汉430070

出　　处：《武汉理工大学学报》2023年第10期135-140,共6页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(40120597)。

摘　　要：探究了包括Levy时序噪声和4种类型的有色噪声(红噪声、粉噪声、蓝噪声和紫噪声)作为幅值噪声的双色噪声对kick rotor模型的动力学演化和混沌特性的影响,分析了在不同有色幅值噪声的影响下动量方差和非时序关联算符的变化。结果表明,相较于Levy kick rotor模型,引入红色和粉色有色噪声可以进一步降低动量方差和非时序关联算符,这意味着引入有色噪声可能是一种有效减缓退相干速率的策略。The introduction of noise in the kick rotor model is known to induce exponential decoherence.Conversely,the Levy kick rotor model exhibits power-law growth in the rate of decoherence.We investigates the impact of double colored noises,specifically the combination of Levy timing noise and four types of colored noise(red,pink,blue,and violet noise)as amplitude noise,on the dynamical evolution and chaotic properties of the kick-driven system.We analyze the alterations in the momentum variance and the out-of-time-order correlation(OTOC)operator under the influence of different colored amplitude noises.Our findings demonstrate that the implementation of red and pink colored amplitude noise can lead to a further decrease in momentum variance and OTOC operator in comparison to the Levy kick rotor model,implying a potentially effective strategy for mitigating the decoherence rate.

关 键 词：kick rotor模型 有色噪声 退相干 

分 类 号：O413[理学—理论物理]