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UID:20250919T011533EDT-8604TLl1nv@132.216.98.100
DTSTAMP:20250919T051533Z
DESCRIPTION:Title: Activated Random Walk: the line between fast and slow sl
 eep.\n\nAbstract: Activated random walk is a process with many chips movin
 g on a graph\, which is intended to be a better-behaved version of the abe
 lian sandpile. Chips that are awake do a simple random walk with rate 1 in
  continuous time. If a chip is by itself on a vertex\, it falls asleep wit
 h some rate\, the parameter lambda. But\, if a second chip enters that ver
 tex later\, both chips wake back up and continue walking. On a finite grap
 h\, eventually all chips will fall asleep\, but that may take a very long 
 time. There is a phase transition from fast to slow sleep. I'll talk about
  the phase transition in the extreme case where a cycle has one chip per v
 ertex\, and a recent result by Forien and Gaudillière proving that sleep i
 s slow on the torus for any positive density of particles if lambda is sma
 ll enough.\n\n \n
DTSTART:20230908T140000Z
DTEND:20230908T150000Z
LOCATION:Room 1214\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue
  Sherbrooke Ouest
SUMMARY:Hannah Cairns (9IÖÆ×÷³§Ãâ·Ñ)
URL:/mathstat/channels/event/hannah-cairns-mcgill-3504
 68
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