论文标题
自propelled颗粒中涡流状态的瞬态动力学的缩放行为
Scaling behavior of transient dynamics of vortex-like states in self-propelled particles
论文作者
论文摘要
多体瞬态动力学非平衡在活跃物质系统环境的适应中起重要作用。但是，这种动态的通用普遍行为通常是难以捉摸的，并且是开放的问题。在这里，我们研究了二维活动物质系统中类似涡流状态的瞬态动力学，该系统由具有外部环境噪声的对齐相互作用的自螺旋体颗粒组成。我们确定了涡流状态的平均寿命的通用幂律缩放，相对于自螺旋体颗粒的速度。这种通用的缩放行为表现出对噪声的强大鲁棒性，直到影响环境波动的影响足够大，足以将颗粒的移动方向随机随机随机。直接的实验观察可以通过相关的实验设置很容易地进行，该设置在噪声水平较低的情况下操作。
Nonequilibrium many-body transient dynamics play an important role in the adaptation of active matter systems environment changes. However, the generic universal behavior of such dynamics is usually elusive and left as open questions. Here, we investigate the transient dynamics of vortex-like states in a two-dimensional active matter system that consists of self-propelled particles with alignment interactions subjected to extrinsic environmental noise. We identify a universal power-law scaling for the average lifetime of vortex-like states with respect to the speed of the self-propelled particles. This universal scaling behavior manifests strong robustness against the noise, up to the level where influences from environmental fluctuations are large enough to directly randomize the moving directions of particles. Direct experimental observations can be readily performed by related experimental setups operated at a decently low noise level.
