论文标题
诱导活性颗粒之间的结合状态
Inducing a bound state between active particles
论文作者
论文摘要
我们表明，两个活性粒子可以通过耦合到驱动的非平衡环境来形成结合状态。我们特别研究了两个相互互动的跑步探针在一个环上移动的情况，每个探针都与驱动的胶体短程相互作用。在时间尺度分离的条件下，这些活性探针被困在结合状态中。实际上，结合状态出现足够高的持久性（低有效温度）。从共同移动框架的角度来看，胶体处于热平衡状态并且探针是活跃和驱动的，与库珀配对一起出现了一个吸引人的类比，因为电子可以看作是飞行员波浪中的跑步和掉落的粒子。
We show that two active particles can form a bound state by coupling to a driven nonequilibrium environment. We specifically investigate the case of two mutually noninteracting run-and-tumble probes moving on a ring, each in short-range interaction with driven colloids. Under conditions of time-scale separation, these active probes become trapped in bound states. In fact, the bound state appears at high enough persistence (low effective temperature). From the perspective of a co-moving frame, where colloids are in thermal equilibrium and the probes are active and driven, an appealing analogy appears with Cooper pairing, as electrons can be viewed as run-and-tumble particles in a pilot-wave picture.
