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arXiv 2205.04436cond-mat.stat-mechphysics.bio-ph
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主动系统中的短时动力学:Vicsek模型

Short-time dynamics in active systems: the Vicsek model

M. Leticia Rubio Puzzo, Ernesto S. Loscar, Andres De Virgiliis, Tomas S. Grigera

摘要:

本文研究了具有矢量噪声的Vicsek模型的短时动力学。STD的研究在确定平衡相变的临界点、临界指数和旋节点等方面有着重要的意义。在这里,我们的目标是测试其在主动系统中的适用性。我们发现,尽管VM的基本非平衡特性(没有细致平衡,活动),STD提出了定性的平衡系统中相同的现象。从STD可以区分过渡是连续的还是不连续的(我们也计算了Binder累积量)。当过渡是连续的,可以确定临界点和临界指数。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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