论文标题
分离活性流体的相位渗透过渡
Percolation transition in phase separating active fluid
论文作者
论文摘要
具有排斥相互作用的活性颗粒表现出的运动诱导的相分离是众所周知的。我们表明，活性颗粒的相互作用柔软度破坏了高度有序的致密相，从而导致形成跨系统的多孔簇。如果粒子运动的增加超出临界值，则可以实现此\ emph {软限制}，在该值中，系统清楚地表现出标准渗透过渡的所有特征。我们还表明，在Athermal极限中，即使在低运动性下，活性颗粒也会显示出相似的过渡。借助这些额外的新阶段，排斥活性颗粒的相图比以前的构想更丰富。
The motility-induced phase separation exhibited by active particles with repulsive interactions is well known. We show that the interaction softness of active particles destabilizes the highly ordered dense phase, leading to the formation of a porous cluster which spans the system. This \emph{soft limit} can also be achieved if the particle motility is increased beyond a critical value, at which the system clearly exhibits all the characteristics of a standard percolation transition. We also show that in the athermal limit, active particles exhibit similar transitions even at low motility. With these additional new phases, the phase diagram of repulsive active particles is revealed to be richer than what was previously conceived.
