论文标题
限制活性流体中的被动物体：定位过渡
Passive objects in confined active fluids: a localization transition
论文作者
论文摘要
我们研究限制活性流体的墙壁如何与放置在其大容量中的不对称无源物体相互作用。我们表明，这些物体经历了由活跃浴室介导的非保守的长距离力。为了领导顺序，可以使用广义图像定理计算这些力。墙壁排斥不对称的物体，无论其微观特性或方向如何。对于圆形腔，我们演示了这可能导致在空腔中心的不对称物体定位，这对于对称对称物体不可能。
We study how walls confining active fluids interact with asymmetric passive objects placed in their bulk. We show that the objects experience non-conservative long-ranged forces mediated by the active bath. To leading order, these forces can be computed using a generalized image theorem. The walls repel asymmetric objects, irrespective of their microscopic properties or their orientations. For circular cavities, we demonstrate how this may lead to the localization of asymmetric objects in the center of the cavity, something impossible for symmetric ones.
