Ising spin model for active particles making directional decision-making

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• Prof. Nir Gov Department of Chemical and Biological Physics Weizmann Institute of Science Rehovot (Israel)
• Tuesday 22 October 2024, 13:00-14:00
• Center for Mathematical Sciences, Lecture room MR4.

If you have a question about this talk, please contact Balázs Németh.

How do animals make decisions on where to go? how do animal groups make such collective decisions? We present a spin-based model for how animal groups and single animals make navigational decisions on their direction and speed. The model describes motion that is diffusive in the disordered phase, and run-and-tumble in the ordered phase. In the presence of global inhibition, it also exhibits an intermittent phase of coexistence between stationary and moving. The model predicts a series of trajectories and a hierarchy of bifurcations in the presence of multiple identical targets. The geometry of these bifurcations is affected by the angular dependence of the interactions between the spins that represent the different targets. These predictions are compared to observations in different animal species. This model presents a new approach to decision-making in animals on the move, and as a new class of deciding-active matter.

This talk is part of the DAMTP Statistical Physics and Soft Matter Seminar series.

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• All CMS events
• Center for Mathematical Sciences, Lecture room MR4
• DAMTP Statistical Physics and Soft Matter Seminar
• Soft Matter
• bld31

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