Emergent states in systems of chiral self-propelled rods (a)

We study inherently chiral self-propelled particles, self-rotating at a fixed frequency, in two dimensions, subjected to nematic alignment interactions and rotational noise. By means of both homogeneous and spatially resolved mean field kinetic theory, we identify various different flocking states....

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Bibliographic Details
Published in:Europhysics letters 2023-07, Vol.143 (1), p.17006
Main Authors: Kürsten, Rüdiger, Levis, Demian
Format: Article
Language:English
Subjects:
Kinetic theory
Noise prediction
Rotational states
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Summary:We study inherently chiral self-propelled particles, self-rotating at a fixed frequency, in two dimensions, subjected to nematic alignment interactions and rotational noise. By means of both homogeneous and spatially resolved mean field kinetic theory, we identify various different flocking states. We confirm the presence of the predicted phases using agent-based simulations, in particular, an homogeneous nematic phase at low frequencies, followed by a microflock pattern phase at larger frequencies, characterized by finite-size nematic clusters. We emphasize that special care has to be taken within the simulations in order to avoid artefacts, and present a non-standard simulation technique in order to avoid them.
ISSN:0295-5075
1286-4854
DOI:10.1209/0295-5075/acdff6