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SUMMARY:Ising spin model for active particles making directional decision-
 making - Prof. Nir Gov  Department of Chemical and Biological Physics Weiz
 mann Institute of Science Rehovot (Israel)
DTSTART:20241022T120000Z
DTEND:20241022T130000Z
UID:TALK220426@talks.cam.ac.uk
CONTACT:Balázs Németh
DESCRIPTION:How do animals make decisions on where to go? how do animal gr
 oups make such collective decisions? We present a spin-based model for how
  animal groups and single animals make navigational decisions on their dir
 ection and speed. The model describes motion that is diffusive in the diso
 rdered 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 trajectorie
 s and a hierarchy of bifurcations in the presence of multiple identical ta
 rgets. The geometry of these bifurcations is affected by the angular depen
 dence of the interactions between the spins that represent the different t
 argets. 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.
LOCATION:Center for Mathematical Sciences\, Lecture room MR4
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