论文标题
在相分离状态下自螺旋粒子的工作波动
Work fluctuations of self-propelled particles in the phase separated state
论文作者
论文摘要
我们研究了在发生宏观相分离的相位图中，在时间间隔τ中，在时间间隔τ中推进与单个活性布朗颗粒相关的工作的分布P（W_τ）的较大偏差。 P（W_τ）的特征是两个峰，与气态和聚类相中的颗粒以及两个独立的非convex分支相关。因此，W_τCumulants的生成函数显示出双重奇异性。我们从系统相的特殊动力学以及观察时间τ和两个阶段粒子的典型持久性时间之间的关系讨论了这种非凸线的起源。
We study the large deviations of the distribution P(W_τ) of the work associated with the propulsion of individual active brownian particles in a time interval τ, in the region of the phase diagram where macroscopic phase separation takes place. P(W_τ) is characterised by two peaks, associated to particles in the gaseous and in the clusterised phases, and two separate non-convex branches. Accordingly, the generating function of W_τcumulants displays a double singularity. We discuss the origin of such non-convex branches in terms of the peculiar dynamics of the system phases, and the relation between the observation time τand the typical persistence times of the particles in the two phases.
