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UID:9087@i2m.univ-amu.fr
DTSTART;TZID=Europe/Paris:20260602T143000
DTEND;TZID=Europe/Paris:20260602T153000
DTSTAMP:20260507T151335Z
URL:https://www.i2m.univ-amu.fr/evenements/tba-299/
SUMMARY:Félix ROUVEYRE (Aix-Marseille Université): On characteristic leng
 th for Activated random walk on the line.
DESCRIPTION:Félix ROUVEYRE: The concept of self-organized criticality was 
 introduced by Bak\, Tang and Wiesenfeld to provide a framework for underst
 anding the emergence\, in various contexts\, of systems exhibiting long-ra
 nge correlations. The historical model they proposed was the abelian sandp
 ile. However\, it  suffers some lack of universality. It was a motivation
  for the introduction of the Activated random walk model which is robust\,
  and exhibits a phase transition governed by two parameters.\nDespite many
  progresses in recent years\, many questions remain opened on this model. 
 Among them\, the understanding of correlations functions is a crucial one.
  We make a step in this direction by establishing the existence of a chara
 cteristic length for the one dimensional version of the dynamic at a suffi
 ciently low density. This is a joint work with Grégory Maillard and Alexa
 ndre Gaudillière. 
CATEGORIES:Séminaire,ALEA,Probabilités
LOCATION:I2M Saint-Charles - Salle de séminaire\, Université Aix-Marseill
 e\, Campus Saint-Charles\, 3 Place Victor Hugo\, Marseille\, 13003\, Franc
 e
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Université Aix-Marseille\,
  Campus Saint-Charles\, 3 Place Victor Hugo\, Marseille\, 13003\, France;X
 -APPLE-RADIUS=100;X-TITLE=I2M Saint-Charles - Salle de séminaire:geo:0,0
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DTSTART:20260329T030000
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