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Stabilization in the Eye of a Cyclone

机译:旋转旋转的眼睛

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摘要

We consider the systematic force on a heavy probe induced by interaction with an overdamped diffusive medium where particles undergo a rotating force around a fixed center. The stiffness matrix summarizes the stability of the probe around that center, where the induced force vanishes. We prove that the introduction of the rotational force in general enhances the stability of that point (and may turn it from unstable to stable), starting at second order in the nonequilibrium amplitude. When the driving is further enhanced the stabilization occurs for a wide range of rotation profiles and the induced stiffness converges to a universal expression proportional to the average mechanical stiffness. The model thus provides a rigorous example of stabilization of a fixed point due to contact with a nonequilibrium medium and beyond linear order around equilibrium.
机译:我们考虑通过与覆盖漫射介质相互作用引起的重探针的系统力,其中颗粒在固定中心周围经历旋转力。 刚度矩阵总结了该中心周围探针的稳定性,其中诱导的力消失。 我们证明,旋转力一般提高了该点的稳定性(并且可以从不稳定到稳定的稳定),从非纤维幅度的二阶开始。 当驱动进一步增强时,对于宽范围的旋转轮廓,并且感应刚度会收敛到与平均机械刚度成比例的通用表达式。 因此,该模型提供了由于与非Quigibibium介质接触的固定点的严格示例,并且超出了围绕平衡的线性顺序。

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