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arXiv 2204.04652nlin.CDcond-mat.stat-mech
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混沌系统中的大偏差:精确结果和动力学相变

Large deviations in chaotic systems: exact results and dynamical phase transition

Naftali R. Smith

摘要:

混沌动力学中的大偏差具有潜在的重大和戏剧性的后果。研究了由混沌映射生成的有限长序列$N$的大偏差。分布通常显示与$N$的指数衰减,与大偏差(率)函数相关。我们得到确切的率函数分析的加倍,帐篷,和Logistic映射。对于后两个,解决方案是作为一个幂级数,其系数可以系统地计算到任何顺序。我们还得到了猫映射的速率函数数值,揭示了一个显着的奇异性,我们解释为二阶动力学相变的存在强有力的证据。此外,我们开发了一个数值工具,有效地模拟序列的非典型实现,如果混沌映射是不可逆的,我们将其应用到帐篷和Logistic映射。

英文摘要:

Large deviations in chaotic dynamics have potentially significant and dramatic consequences. We study large deviations of series of finite lengths $N$ generated by chaotic maps. The distributions generally display an exponential decay with $N$, associated with large-deviation (rate) functions. We obtain the exact rate functions analytically for the doubling, tent, and logistic maps. For the latter two, the solution is given as a power series whose coefficients can be systematically calculated to any order. We also obtain the rate function for the cat map numerically, uncovering strong evidence for the existence of a remarkable singularity of it that we interpret as a second order dynamical phase transition. Furthermore, we develop a numerical tool for efficiently simulating atypical realizations of sequences if the chaotic map is not invertible, and we apply it to the tent and logistic maps.

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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