arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2407.09449nlin.CD
收藏

含时滞系统中的弱混沌、反常扩散与弱遍历性破缺

Weak Chaos, Anomalous Diffusion, and Weak Ergodicity Breaking in Systems with Delay

Tony Albers, Lukas Hille, David Müller-Bender, Günter Radons

AI总结:

该研究揭示含线性瞬时项与特定延迟非线性项的时滞系统的弱混沌等反常特性,阐明延迟调制的影响及非双曲不动点的成因。

摘要:

我们证明,当非线性项选自一类特定函数时,包含线性瞬时项与延迟非线性项的标准时滞系统会呈现弱混沌、渐近次扩散行为以及弱遍历性破缺。在大恒定延迟时间的极限下,由于渡越时间呈指数级增大,反常行为可能无法被观测到。对延迟施加周期性调制会大幅降低混沌相的有效维度,催生迄今未知的解类型,且反常扩散在短时间内就会出现。观测到的反常行为由函数空间中的非双曲不动点导致。

英文摘要:

We demonstrate that standard delay systems with a linear instantaneous and a delayed nonlinear term show weak chaos, asymptotically subdiffusive behavior, and weak ergodicity breaking if the nonlinearity is chosen from a specific class of functions. In the limit of large constant delay times, anomalous behavior may not be observable due to exponentially large crossover times. A periodic modulation of the delay causes a strong reduction of the effective dimension of the chaotic phases, leads to hitherto unknown types of solutions, and the occurrence of anomalous diffusion already at short times. The observed anomalous behavior is caused by non-hyperbolic fixed points in function space.

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。

↑