視覚認識を有する活性ブラウン粒子における回転クラスターの出現

We examine the group formation and subsequent dynamics of active particles that are equipped with a visual perception using Langevin dynamics simulations. These particles possess an orientational response to the position of the nearest neighbors, which are within a vision cone of these particles. We observe the emergence of rotating clusters when the visual perception of the particles is in the intermediate range. We have found that the persistent motion of these active particles is intimately correlated with the emerging structures by analyzing the persistence probability as well as the orientational correlation function. For rotating clusters, the persistent probability is found to be very quickly decaying, and the orientational correlation function shows oscillatory behavior.