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SUMMARY:Simple models of active particles: Pattern formation and phase tra
 nsitions - Demian Levis\, Barcelone University
DTSTART:20220222T130000Z
DTEND:20220222T140000Z
UID:TALK168425@talks.cam.ac.uk
CONTACT:Camille Scalliet
DESCRIPTION:Active matter comprises a wide variety of systems characterize
 d by the continuous consumption of energy of its elementary constituents\,
  typically converted into directed motion. As a result\, active matter evo
 lves out-of-equilibrium\, lifting most of the constraints imposed by equil
 ibrium statistical mechanics. One of the common features of these systems\
 , is their (sometimes spectacular) collective self-organization in space a
 nd time\, eventually leading to non-equilibrium phase transitions. This na
 turally arises the question: can we classify the large scale behavior of a
 ctive systems within a limited number of 'universality classes'\, represen
 ted by some minimal models? Here I will present an overview of the collect
 ive behavior of simple models of chiral and non-chiral active particles wi
 th excluded volume interactions\, in the presence (or absence) of velocity
 -aligning torques of different nature. I will discuss what I believe are s
 ome general features of these systems by comparing results obtained from p
 article-based simulations\, continuum theories and recent experiments of s
 pinning colloidal suspensions.
LOCATION:Center for Mathematical Sciences\, Lecture room MR11\, or https:/
 /maths-cam-ac-uk.zoom.us/j/98016675669
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