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SUMMARY:Branching Brownian motion with selection - Pascal Maillard (UPMC)
DTSTART:20120207T141500Z
DTEND:20120207T151500Z
UID:TALK36027@talks.cam.ac.uk
CONTACT:24872
DESCRIPTION: Consider supercritical branching Brownian motion on the real 
 line\n(particles diffuse according to Brownian motions and reproduce at co
 nstant\nrate)\, where additionally a particle gets killed whenever N parti
 cles are to\nthe right of it (we call this model the N-BBM). Brunet\, Derr
 ida\, Mueller and\nMunier predicted detailed statistics of the fluctuation
 s of this model in\nthe large population limit. In this talk\, I will pres
 ent a related model\,\nwhich consists of introducing a random space-time b
 arrier at which particles\nare instantaneously killed in such a way that t
 he population size stays\nalmost constant over time. I will show how one c
 an prove the physicists\npredictions for this approximate model\, which is
  a first step in the study\nof the N-BBM.\n
LOCATION:MR12\, CMS\, Wilberforce Road\, Cambridge\, CB3 0WB
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