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UID:20251104T012612EST-5026Xau4kl@132.216.98.100
DTSTAMP:20251104T062612Z
DESCRIPTION:Branching Brownian motion with absorption at critical and near-
 critical drift.\n\nBranching Brownian motion is a system of particles wher
 e particles branch at constant rate into two particles (say) and diffuse a
 ccording to standard Brownian motions (there is no interaction between the
  particles apart from the branching). This process\, and its discrete vers
 ion\, the branching random walk\, have applications in many fields\, inclu
 ding population models\, reaction-diffusion equations\, spin glasses and p
 referential attachment graphs. A natural extension of the model is to kill
  particles when they reach a certain point and to add a drift towards that
  point. There is a minimal drift at which the system dies out almost surel
 y. In recent years\, spectacular results have been obtained in the cases w
 here the drift is at or just below this critical point. I will first revie
 w these results\, then present work in progress on the critical case (join
 t work with Julien Berestycki and Jason Schweinsberg). Finally\, I shall p
 resent work in progress (with Michel Pain) on the fluctuations of the Gibb
 s measure of branching Brownian motion (without absorption) at the critica
 l temperature. Our methods are partly inspired by the recent work on branc
 hing Brownian motion with absorption.\n
DTSTART:20180226T190000Z
DTEND:20180226T200000Z
LOCATION:Room 1214\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue
  Sherbrooke Ouest
SUMMARY:Pascal Maillard\, Université Paris-Sud
URL:/mathstat/channels/event/pascal-maillard-universit
 e-paris-sud-285292
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