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arXiv 1409.7449nlin.CDcond-mat.stat-mech
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带分裂点处混沌动力学位置和分布的标度性

Scaling of distributions of sums of positions for chaotic dynamics at band-splitting points

Alvaro Diaz-Ruelas, Miguel Angel Fuentes, Alberto Robledo

摘要:

由Logistic映射产生的轨道的位置和的平稳分布已被发现遵循一个基本的重整化群(RG)的结构:一个非平凡的不动点多尺度分布在倍周期的混沌开始和高斯平凡的不动点分布的所有混沌吸引子。在这里,我们详细描述了交叉分布,可以产生在混沌带分裂点,调解上述定点分布之间。混沌区域中的自仿射将尺度特征印刻到沿带分裂点序列的交叉分布上。产生这些分布的轨迹首先由相空间间隙的顺序形成来控制,当初始均匀分布时,轨迹集朝着混沌带吸引子发展。随后,已经在混沌带内的轨迹的位置的总和关闭这些间隙。所得分布的可能形状关键取决于和中早期位置集合的处理以及保留在其中的项数的停止。

英文摘要:

The stationary distributions of sums of positions of trajectories generated by the logistic map have been found to follow a basic renormalization group (RG) structure: a nontrivial fixed-point multi-scale distribution at the period-doubling onset of chaos and a Gaussian trivial fixed-point distribution for all chaotic attractors. Here we describe in detail the crossover distributions that can be generated at chaotic band-splitting points that mediate between the aforementioned fixed-point distributions. Self affinity in the chaotic region imprints scaling features to the crossover distributions along the sequence of band splitting points. The trajectories that give rise to these distributions are governed first by the sequential formation of phase-space gaps when, initially uniformly-distributed, sets of trajectories evolve towards the chaotic band attractors. Subsequently, the summation of positions of trajectories already within the chaotic bands closes those gaps. The possible shapes of the resultant distributions depend crucially on the disposal of sets of early positions in the sums and the stoppage of the number of terms retained in them.

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