具有尾流介导相互作用的双层分散体中的新兴活动
Emerging activity in bilayered dispersions with wake-mediated interactions
摘要：
在具有尾流介导相互作用的双层粒子质点系中，不同层粒子之间的有效力的作用-反应对称性被打破。在相当一般的条件下，我们表明，如果相互作用的非互易性超过一定的阈值，这将创建一个积极的分散的自推进集群的布朗粒子。新出现的活动促进了不寻常的融化情景和稠密流体中的巨大扩散率。我们的结果是通过计算机模拟和分析理论得到的，并可以在实验中与胶体分散体和复杂的等离子体进行验证。
英文摘要：
In a bilayered system of particles with wake-mediated interactions, the action-reaction symmetry for the effective forces between particles of different layers is broken. Under quite general conditions we show that, if the interaction nonreciprocity exceeds a certain threshold, this creates an active dispersion of self-propelled clusters of Brownian particles. The emerging activity promotes unusual melting scenarios and an enormous diffusivity in the dense fluid. Our results are obtained by computer simulation and analytical theory, and can be verified in experiments with colloidal dispersions and complex plasmas.
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