152 citations · 631 across the 14 of their papers we have counts for
13 papers
Inescapable anisotropy of non-reciprocal XY models
Dawid Dopierala, Hugues Chaté, Xia-qing Shi +1
We investigate non-reciprocal XY (NRXY) models defined on two-dimensional lattices in which the coupling strength of a spin with its neighbors varies with their position in the fra…
Condensation and Synchronization in Aligning Chiral Active Matter
Yujia Wang, Bruno Ventéjou, Hugues Chaté +1
We show that spontaneous density segregation in dense systems of aligning circle swimmers is a condensation phenomenon at odds with the phase separation scenarios usually observed…
Extreme Spontaneous Deformations of Active Crystals
Xia-qing Shi, Fu Cheng, Hugues Chaté
We demonstrate that two-dimensional crystals made of active particles can experience extremely large spontaneous deformations without melting. Using particles mostly interacting vi…
Small Obstacle in a Large Polar Flock
Joan Codina, Benoît Mahault, Hugues Chaté +3
We show that arbitrarily large polar flocks are susceptible to the presence of a single small obstacle. In a wide region of parameter space, the obstacle triggers counter-propagati…
Susceptibility of Orientationally-Ordered Active Matter to Chirality Disorder
Bruno Ventejou, Hugues Chaté, Raul Montagne +1
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 intrinsi…
Data-driven quantitative modeling of bacterial active nematics
He Li, Xia-qing Shi, Mingji Huang +5
Active matter comprises individual units that convert energy into mechanical motion. In many examples, such as bacterial systems and biofilament assays, constituent units are elong…
Breakdown of Ergodicity and Self-Averaging in Polar Flocks with Quenched Disorder
Yu Duan, Benoît Mahault, Yu-qiang Ma +2
We show that spatial quenched disorder affects polar active matter in ways more complex and far-reaching than believed heretofore. Using simulations of the 2D Vicsek model subjecte…
Self-Organized Critical Coexistence Phase in Repulsive Active Particles
Xia-qing Shi, Giordano Fausti, Hugues Chaté +2
We revisit motility-induced phase separation in two models of active particles interacting by pairwise repulsion. We show that the resulting dense phase contains gas bubbles distri…
Dynamical Sub-classes of Dry Active Nematics
Li-bing Cai, Hugues Chaté, Yu-qiang Ma +1
We show that the dominant mode of alignment plays an important role in dry active nematics,leading to two dynamical sub-classes defined by the nature of the instability of the nema…
Self-Propelled Rods: Linking Alignment-Dominated and Repulsion-Dominated Active Matter
Xia-qing Shi, Hugues Chaté
We study a robust model of self-propelled rods interacting via volume exclusion and show that its collective dynamics encompasses both that of the corresponding Vicsek-style model…
Active Matter Class with Second-Order Transition to Quasi-Long-Range Polar Order
B. Mahault, X. -c. Jiang, E. Bertin +4
We introduce and study in two dimensions a new class of dry, aligning, active matter that exhibits a direct transition to orientational order, without the phase-separation phenomen…
Fore-aft asymmetric flocking
Qiu-shi Chen, Aurelio Patelli, Hugues Chaté +2
We show that fore-aft asymmetry, a generic feature of living organisms and some active matter systems, can have a strong influence on the collective properties of even the simplest…
Deterministic endless collective evolvement in active nematics
Xia-qing Shi, Yu-qiang Ma
We propose a simple deterministic dynamic equation and reveal the mechanism of large-scale endless evolvement of spatial density inhomogeneity in active nematic. We determine the p…