Unified model of collective bio-motion and group formation as phase transition

众所周知，交通堵塞可以用物理学的概念来理解。相变可以解释交通流在一定密度下突然变化的原因。在人流中，所谓的阻塞发生在高密度的狭窄走廊上。它可以像交通堵塞一样被理解。在这项工作中，我们用与交通和行人流相同的模型来研究集体生物运动中的现象。因此，在一长群生物体中出现的蜿蜒可以用类似的方式来解释。

It is well-known that the traffic jam is understood by the idea of physics. Phase transition can explain why a state of traffic flow changes suddenly at a certain density. In pedestrian flow, so-called blocking occurs in a narrow corridor at high density. It can be understood in the same way as the traffic jam. In this work, we investigate phenomena in collective bio-motion by the same model as traffic and pedestrian flow. As a result, a meander which appears in a long group of organisms can be explained in a similar way.