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SUMMARY:Scaling limits of random walks and their time changes on trees and
  other graphs - David Croydon (Warwick)
DTSTART:20160223T163000Z
DTEND:20160223T173000Z
UID:TALK64730@talks.cam.ac.uk
CONTACT:Perla Sousi
DESCRIPTION:I will survey some recent work regarding the scaling limits of
  random walks and the associated local times on trees and other graphs. Th
 e models discussed will include critical Galton-Watson trees\, the uniform
  spanning tree in two dimensions and self-similar pre-fractal graphs. I wi
 ll further describe how\, as a consequence of these results\, it is possib
 le to understand the scaling limits of some natural time-changes of the ra
 ndom walks\, such as the Bouchaud trap model\, and also the two common var
 iants of the continuous time random conductance model. The latter results 
 are part of ongoing work with Ben Hambly (Oxford) and Takashi Kumagai (Kyo
 to).
LOCATION:MR12\, CMS\, Wilberforce Road\, Cambridge\, CB3 0WB
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