We investigate the susceptibility of long-range ordered phases of two-dimensional dry aligning active matter to population disorder, taken in the form of a distribution of intrinsic individual chiralities. Using a combination of particle-level models and hydrodynamic theories derived from them, we show that while in finite systems all ordered phases resist a finite amount of such chirality disorder, the homogeneous ones (polar flocks and active nematics) are unstable to any amount of disorder in the infinite-size limit. On the other hand, we find that the inhomogeneous solutions of the coexistence phase (bands) may resist a finite amount of chirality disorder even asymptotically.

中文翻译：

---

定向有序活性物质对手性障碍的敏感性

我们研究了二维干排列活性物质的长程有序相对种群紊乱的敏感性，采用内在个体手性分布的形式。使用粒子级模型和从中派生的流体动力学理论的组合，我们表明，虽然在有限系统中所有有序相都抵抗有限量的这种手性无序，但同质相（极地群和活性向列相）对任何量的手性都不稳定。无穷大极限中的无序。另一方面，我们发现共存相（带）的非均匀解甚至可以渐近地抵抗有限量的手性紊乱。