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SUMMARY:Ellipticity criteria for ballistic behavior of random walks in ran
 dom environment
DTSTART:20130118T141500
DTEND:20130118T150000
DTSTAMP:20260427T215257Z
UID:7079fa87da8872f1120706cf2b6f8e66e7d422c82ae40a803bdc8d1e
CATEGORIES:Conferences - Seminars
DESCRIPTION:Professor Alejandro Ramírez (Pontificia Universidad Católic
 a de Chile)\nWe introduce  new ellipticity criteria for random walks in i
 .i.d. random environments under which we can extend the ballisticity condi
 tions and some of their consequences originally defined for uniformly elli
 ptic environments. We  prove under these ellipticity criteria the equival
 ence of Sznitman's $(T')$ condition with the polynomial effective criterio
 n $(P)_M$\, for $M$ large enough\, recently introduced by Berger\, Drewitz
  and Ramírez. We furthermore give  ellipticity criteria under which a ra
 ndom walk satisfying the polynomial effective criterion\, is ballistic\, s
 atisfies the annealed central limit theorem or the quenched central limit 
 theorem.\nThis talk is based on a joint work with David Campos.
LOCATION:MA A1 12
STATUS:CONFIRMED
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