在活性粒子之间诱导束缚态
Inducing a bound state between active particles
摘要：
我们发现，两个活跃的粒子可以通过耦合到一个驱动的非平衡环境中形成一个束缚态。我们专门调查的情况下，两个相互不相互作用的运行和翻滚探针移动环，每个驱动胶体在短距离相互作用。在时间尺度分离的条件下，这些活性探针被捕获在束缚态中。事实上，束缚态出现在足够高的持久性（低有效温度）。从同向运动坐标系的角度来看，胶体处于热平衡，探针处于活动状态并被驱动，这与库珀配对有一个吸引人的类比，因为电子可以被视为导频波图像中的奔跑和翻滚粒子。
英文摘要：
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.
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