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Vectorial crystallization problems and collective behavior
We propose and analyze a class of vectorial crystallization problems, with applications to crystallization of anisotropic molecules and collective behavior such as birds flocking and fish schooling. We focus on two-dimensional systems of “oriented” particles: Admissible configurations are represente...
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Published in: | Journal of mathematical biology 2022-01, Vol.84 (1-2), p.6-6, Article 6 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites |
Online Access: | Get full text |
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Summary: | We propose and analyze a class of vectorial crystallization problems, with applications to crystallization of anisotropic molecules and collective behavior such as birds flocking and fish schooling. We focus on two-dimensional systems of “oriented” particles: Admissible configurations are represented by vectorial empirical measures with density in
S
1
. We endow such configurations with a graph structure, where the bonds represent the “convenient” interactions between particles, and the proposed variational principle consists in maximizing their number. The class of bonds is determined by hard sphere type pairwise potentials, depending both on the distance between the particles and on the angles between the segment joining two particles and their orientations, through threshold criteria. Different ground states emerge by tuning the angular dependence in the potential, mimicking ducklings swimming in a row formation and predicting as well, for some specific values of the angular parameter, the so-called
diamond formation
in fish schooling. |
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ISSN: | 0303-6812 1432-1416 |
DOI: | 10.1007/s00285-021-01704-0 |