自推进和自导航：活动是干扰的前兆
Self-propulsion and self-navigation: Activity is a precursor to jamming
摘要：
交通堵塞是日常运输的障碍，通常发生在许多车辆具有相同或相似的目的地时。然而，我们表明，即使在空间中均匀分布和不相关的，目标有一个至关重要的影响运输。在适度的密度下，不稳定性会出现，导致目标之间出现相关性的堵塞。通过考虑映射到活性布朗粒子的动力学的极限情况下，我们认为，运动引起的相分离是堵塞的前兆。也就是说，堵塞是由于目标积累而经历额外不稳定性的MIPS种子。这提供了一个定量预测的干扰的发病密度，并建议如何干扰可能被延迟或防止。我们研究了阻塞相和流动相之间的过渡，发现在阻塞的尖点处，输运是最有效的。
英文摘要：
Traffic jams are an everyday hindrance to transport, and typically arise when many vehicles have the same or a similar destination. We show, however, that even when uniformly distributed in space and uncorrelated, targets have a crucial effect on transport. At modest densities an instability arises leading to jams with emergent correlations between the targets. By considering limiting cases of the dynamics which map onto active Brownian particles, we argue that motility induced phase separation is the precursor to jams. That is, jams are MIPS seeds that undergo an extra instability due to target accumulation. This provides a quantitative prediction of the onset density for jamming, and suggests how jamming might be delayed or prevented. We study the transition between jammed and flowing phase, and find that transport is most efficient on the cusp of jamming.
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