论文标题
稀释活性布朗颗粒的成对相关性：从低活性偶极校正到高活性代数耗尽机翼
Pair correlation of dilute Active Brownian Particles: from low activity dipolar correction to high activity algebraic depletion wings
论文作者
论文摘要
我们使用数值模拟和分析计算研究了在低密度下活跃的布朗颗粒的对相关性。我们观察到有翼的一对相关性：虽然颗粒正如预期的那样积聚在活性粒子前的，但耗尽的唤醒由两个耗尽的机翼组成。在软颗粒的极限中，我们获得了对配对相关性的封闭方程，使我们能够表征耗尽的机翼。特别是，我们在高活动范围内公布了两个制度，其中翅膀采用自相似的特征和代数衰减。我们还进行了自propell的Janus颗粒的实验，并实际上观察到耗尽的翅膀。
We study the pair correlation of Active Brownian Particles at low density using numerical simulations and analytical calculations. We observe a winged pair correlation: while particles accumulate in front of an active particle as expected, the depletion wake consists of two depletion wings. In the limit of soft particles, we obtain a closed equation for the pair correlation, allowing us to characterize the depletion wings. In particular, we unveil two regimes at high activity where the wings adopt a self-similar profile and decay algebraically. We also perform experiments of self-propelled Janus particles and indeed observe the depletion wings.
