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arXiv 2301.02518nlin.AOmath.DS
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复制子方程中的高阶动力学在石头-剪刀-布博弈中产生极限环

Higher Order Dynamics in the Replicator Equation Produce a Limit Cycle in Rock-Paper-Scissors

Christopher Griffin, Rongling Wu

AI总结:

本文通过引入秩三张量同时考虑成对和三元相互作用,构建了新的复制子动力学,发现高阶相互作用在广义石头-剪刀-布博弈中会导致亚临界Hopf分岔和极限环,揭示了高阶相互作用对系统动力学的深刻影响。

摘要:

最近的研究表明,成对相互作用可能不足以完全模拟野外的生态动力学。在这封信中,我们考虑了一个同时考虑成对和三元相互作用的复制子动力学,使用一个秩为三的张量。我们使用一个广义的石头-剪刀-布博弈来研究这些新的非线性动力学,该博弈的动力学在标准复制子意义上是很好理解的。我们证明,高阶动力学的引入导致了一个亚临界 Hopf 分岔的产生,从而产生一个不稳定的极限环。众所周知,这种行为不可能在任何三策略博弈的成对复制子中出现,这表明高阶相互作用对系统最终动力学的影响。我们数值表征了极限环存在的参数区域,并讨论了将这种方法推广到研究高阶相互作用的可能途径。

英文摘要:

Recent work has shown that pairwise interactions may not be sufficient to fully model ecological dynamics in the wild. In this letter, we consider a replicator dynamic that takes both pairwise and triadic interactions into consideration using a rank-three tensor. We study {these} new nonlinear dynamics using a generalized rock-paper-scissors game whose dynamics are well understood in the {standard} replicator sense. We show that the addition of higher-order dynamics leads to the creation of a subcritical Hopf bifurcation and consequently an unstable limit cycle. It is known that this kind of behaviour cannot occur in the pairwise replicator in any three strategy games, showing the effect higher-order interactions can have on the resulting dynamics of the system. We numerically characterize parameter regimes in which limit cycles exist and discuss possible ways to generalize this approach to studying higher-order interactions.

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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