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arXiv · 2107.14106

Susceptibility of Orientationally-Ordered Active Matter to Chirality Disorder

Bruno Ventejou·Hugues Chaté·Raul Montagne·Xia-qing Shi
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Abstract

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.

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Bruno Ventejou, Hugues Chaté, Raul Montagne, Xia-qing Shi. 2021-07-29. Susceptibility of Orientationally-Ordered Active Matter to Chirality Disorder. https://doi.org/10.1103/physrevlett.127.238001

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