论文标题
狭窄通道中驱动示踪剂的吸引和凝结
Attraction and condensation of driven tracers in a narrow channel
论文作者
论文摘要
当在几何约束下通过平衡的浴缸同时驱动多个颗粒时，出现了浴室介导的吸引力和凝结。尽管在多种非平衡现象中观察到了这种情况，并具有丰富的实验和数值证据，但目前对这些相互作用的产生方式几乎没有定量理解。在这里，我们通过研究两个驱动的“示踪剂”颗粒的行为来解决问题，并在1D晶格中通过浴缸进行了播种，并具有排除数量的相互作用。我们分析探索负责示踪剂的紧急相互作用的机制，并计算产生的有效吸引力。然后，该机制被数字显示为限制在狭窄2D通道的硬驱动的布朗盘的现实模型。
Emergent bath-mediated attraction and condensation arise when multiple particles are simultaneously driven through an equilibrated bath under geometric constraints. While such scenarios are observed in a variety of non-equilibrium phenomena, with an abundance of experimental and numerical evidence, little quantitative understanding of how these interactions arise is currently available. Here we approach the problem by studying the behavior of two driven "tracer" particles, propagating through a bath in a 1D lattice with excluded-volume interactions. We analytically explore the mechanism responsible for the tracers' emergent interactions and compute the resulting effective attractive potential. This mechanism is then numerically shown to extend to a realistic model of hard driven Brownian discs confined to a narrow 2D channel.
