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SUMMARY:Coarse-graining hot Brownian swimmers - Klaus Kroy (Leipzig Univer
 sity\, ITP)
DTSTART:20231121T130000Z
DTEND:20231121T140000Z
UID:TALK206527@talks.cam.ac.uk
CONTACT:Sarah Loos
DESCRIPTION:On a mesoscale\, suspensions of locally heated colloidal parti
 cles can to some extent be described like ordinary isothermal systems with
  effective parameters that can be predicted for sufficiently symmetric set
 ups. This still holds\, to a lesser degree\, for asymmetrically heated ("J
 anus") particles that turn into active\, self-propelling microswimmers\, d
 ue to unbalanced thermal gradients. I will discuss informative signatures 
 of the local nonequilibrium\, accessible to mesoscale observers. Some incr
 easingly coarse-grained paradigmatic situations that we have recently cons
 idered comprise active heat engines\, polarization-density patterns sponta
 neously emerging from activity gradients\, ensuing active ratcheting\, and
  time-reversal symmetry breaking fluctuations in non-reciprocal field theo
 ries.  
LOCATION:Center for Mathematical Sciences\, Lecture room MR4
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