论文标题
活动系统中的短时动态：Vicsek模型
Short-time dynamics in active systems: the Vicsek model
论文作者
论文摘要
我们研究具有矢量噪声的Vicsek模型的短时动力学（STD）。事实证明，对STD的研究在测定临界点，临界指数和旋转点中的临界点过渡中非常有用。在这里，我们旨在测试其在活动系统中的适用性。我们发现，尽管VM具有基本的非平衡特征（缺乏详细的平衡，活动），但STD在质量上与平衡系统相同的现象学表现出来。从STD中，可以区分过渡是连续还是不连续的（我们已经检查了粘合剂累积剂）。当过渡连续时，可以确定关键点和临界指数。
We study the short-time dynamics (STD) of the Vicsek model with vector noise. The study of STD has proved to be very useful in the determination of the critical point, critical exponents, and spinodal points in equilibrium phase transitions. Here we aim to test its applicability in active systems. We find that, despite the essential non-equilibrium characteristics of the VM (absence of detailed balance, activity), the STD presents qualitatively the same phenomenology as in equilibrium systems. From the STD one can distinguish whether the transition is continuous or discontinuous (which we have checked also computing the Binder cumulant). When the transition is continuous, one can determine the critical point and the critical exponents.
