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罕见但稳定:一维swarmalator模型中的隐藏态

Rare but stable: hidden states in the 1D swarmalator model

Rommel Tchinda Djeudjo, Kevin P. O'Keeffe, Timoteo Carletti

arXiv 2609.33929首次发表:更新:

发表机构

University of Namur; Starling Research Institute(那慕尔大学; 斯塔林研究所)

机构由 AI 辅助整理,请以论文原文为准。

AI 中文总结

本研究揭示一维swarmalator模型除已知三种宏观态外,还存在隐藏的稳定平衡态族,它们局部稳健但全局难以达到,扩展了该模型的状态理解。

AI 中文摘要

一维swarmalator模型通常通过三种宏观状态来理解:同步、相位波和异步。我们证明,相同的模型还包含更大的一组隐藏的稳定平衡态——q-扭转态和m-簇态族——随机初始条件几乎无法达到这些状态,因为许多状态嵌入在全局盆地消失的退化中性流形中。然而,它们在局部上是稳健的:在每坐标振幅的高斯扰动{\epsilon}下,它们的生存半径仅以代数方式缩小,即1/q和1/m,这与最近邻Kuramoto环上扭转态的高斯盆地和缠绕上限形成鲜明对比,这两者都被平均场耦合移除。块循环雅可比矩阵以闭式形式确定了稳定性,远踢实验表明这些盆地是紧凑的核心而非触手状集合。因此,扩展swarmalator模型中报告的几种模式已经存在于最小模型中,无论是稳定的还是中性稳定的。

英文摘要

The one-dimensional swarmalator model is usually understood through three macroscopic states: synchrony, the phase wave, and asynchrony. We show that the identical model also contains a much larger set of hidden stable equilibria - families of q-twisted and m-clustered states - which random initial conditions almost never reach, because many are embedded in a degenerate neutral manifold of vanishing global basin. They are nonetheless locally robust: under Gaussian perturbations of per-coordinate amplitude ε their survival radii shrink only algebraically, as 1/q and 1/m, in sharp contrast to the Gaussian basins and winding ceiling of twisted states on a nearest-neighbour Kuramoto ring, both removed by mean-field coupling. A block-circulant Jacobian fixes the stability in closed form, and far-kick experiments indicate the basins are compact cores rather than tentacled sets. Several patterns reported in extended swarmalator models thus already exist, stable or neutrally stable, in the minimal one.

论文原文

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