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SUMMARY:The long-ranged influence of disorder on active systems - Yariv Ka
 fri\, Technion-Israel Institute of Technology
DTSTART:20221025T120000Z
DTEND:20221025T130000Z
UID:TALK179078@talks.cam.ac.uk
CONTACT:Tal Agranov
DESCRIPTION:The talk will describe the impact of quenched random potential
 s on active matter. By developing a methodology for studying these systems
  both bulk and boundary disorder will be considered. For dilute systems it
  will be shown that bulk disorder leads to generic long-range correlations
 \, decaying as a power-law\, and steady-state currents. Disorder localized
  along a wall confining the system leads to long-range density modulations
  and eddies whose amplitude decays as a power law with the distance from t
 he wall\, but whose extent grows with it. The talk will also consider dens
 e scalar active systems whose sole hydrodynamic mode is the density. These
  are known to exhibit a motility induced phase separation in dimensions d 
 \\geq 2. It will be shown that bulk potential disorder destroys the transi
 tion in dimensions d<4\, while boundary disorder destroys it in dimensions
  d<3.\n\nZoom link: https://zoom.us/j/98016675669
LOCATION:Center for Mathematical Sciences\, Lecture room MR4 or https://zo
 om.us/j/98016675669
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