Polar vs. apolar alignment in systems of polar self-propelled particles

The symmetry of the alignment mechanism in systems of polar self-propelled particles determines the possible macroscopic large-scale patterns that can emerge. Here we compare polar and apolar alignment. These systems share some common features like giant number fluctuations in the ordered phase and...

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Bibliographic Details
Published in:Journal of physics. Conference series 2011-01, Vol.297 (1), p.012014-8
Main Authors: Peruani, Fernando, Ginelli, Francesco, Bär, Markus, Chaté, Hugues
Format: Article
Language:English
Subjects:
Alignment
Analogies
Bands
Biological Physics
Fluctuation
Particles (of physics)
Physics
Stability
Symmetry
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Summary:The symmetry of the alignment mechanism in systems of polar self-propelled particles determines the possible macroscopic large-scale patterns that can emerge. Here we compare polar and apolar alignment. These systems share some common features like giant number fluctuations in the ordered phase and self-segregation in the form of bands near the onset of orientational order. Despite these similarities, there are essential differences like the symmetry of the ordered phase and the stability of the bands.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/297/1/012014