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SUMMARY:Can a Small Group of Passive Agents Cause Lasting Chaos? hydrodyna
 mic limit and phase separation of an active-passive mixture - Maria Bruna 
 (University of Oxford)
DTSTART:20241004T121500Z
DTEND:20241004T124500Z
UID:TALK220954@talks.cam.ac.uk
DESCRIPTION:In this talk\, I will discuss a model&nbsp\;mixture of active 
 (self-propelled) and passive (diffusive) particles with non-reciprocal eff
 ective interactions (or forces that violate Newton&rsquo\;s third law). We
  derive the hydrodynamic PDE limit for the particle densities\, which is n
 ot a Wasserstein gradient flow of any free energy\, consistent with the mi
 croscopic model having non-equilibrium steady states. We study the emergen
 ce of collective behaviour\, which includes phase separation and dynamical
  (travelling) steady states.
LOCATION:Seminar Room 1\, Newton Institute
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