Félix ROUVEYRE (Aix-Marseille Université): On characteristic length for Activated random walk on the line.

Félix ROUVEYRE: The concept of self-organized criticality was introduced by Bak, Tang and Wiesenfeld to provide a framework for understanding the emergence, in various contexts, of systems exhibiting long-range correlations. The historical model they proposed was the abelian sandpile. However, it suffers some lack of universality. It was a motivation for the introduction of the Activated random wa