Vortex formation by active agents as a model for Daphnia swarming

Vortex formation by active agents as a model for Daphnia swarming

We propose a self-propelled particle model for the swarming of Daphnia that takes into account mutual repulsion and attraction to a center. Surprisingly, a vortex is formed only for an intermediate strength of propulsion. The phase diagram and the transitions between states with and without a vortex...

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Veröffentlicht in:Physical review. E, Statistical, nonlinear, and soft matter physics Statistical, nonlinear, and soft matter physics, 2006-06, Vol.73 (6 Pt 1), p.061924-061924, Article 061924
Hauptverfasser: Vollmer, Jürgen, Vegh, Attila Gergely, Lange, Christoph, Eckhardt, Bruno
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Sprache:eng
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Animals
Daphnia - physiology
Models, Biological
Motion
Swimming
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container_end_page 061924
container_issue 6 Pt 1
container_start_page 061924
container_title Physical review. E, Statistical, nonlinear, and soft matter physics
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creator Vollmer, Jürgen
Vegh, Attila Gergely
Lange, Christoph
Eckhardt, Bruno
description We propose a self-propelled particle model for the swarming of Daphnia that takes into account mutual repulsion and attraction to a center. Surprisingly, a vortex is formed only for an intermediate strength of propulsion. The phase diagram and the transitions between states with and without a vortex are analyzed, and the nature of the phase boundaries is discussed based on a linear stability analysis of the motion of individual swimmers. This allows us to identify various key parameters determining the characteristic features of the collective motion.
doi_str_mv 10.1103/PhysRevE.73.061924
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subjects Animals
Daphnia - physiology
Models, Biological
Motion
Swimming
title Vortex formation by active agents as a model for Daphnia swarming
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