Swarming rigid bodies: geometry and topology

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• Pierre Degond (CNRS (Centre national de la recherche scientifique))
• Tuesday 08 August 2023, 09:00-10:00
• Seminar Room 1, Newton Institute.

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MMVW02 - Collective Behaviour

Collective dynamics in systems of self-propelled particles has stimulated intense mathematical research in the recent years. Many different models have been proposed but most of them rely on point particles. In practice, particles often have more complex geometrical structures. Here, we will consider particles as rigid bodies whose body attitude is described by an orthonormal frame. Particles tend to align their frame with those of their neighbours. A hydrodynamic model will be derived when the number of particles is large. It will be used to exhibit solutions having non-trivial topology. We will investigate whether topology provides enhanced stability against perturbations, as observed in other systems such as topological insulators. This talk is based on recent results issued from collaborations with Antoine Diez, Amic Frouvelle, Sara Merino-Aceituno, Mingye Na and Ariane Trescases.

This talk is part of the Isaac Newton Institute Seminar Series series.

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