Critical fluctuations of relaxation events in a stochastic reaction diffusion system
Université de Tokyo
Lundi 24/09/2007, 14:15
Salle Claude Itzykson, Bât. 774, Orme des Merisiers
Motivated from recent extensive studies of critical
fluctuations of dynamical events in glassy systems,
we study relaxation events to the stable state in
a simple stochastic reaction diffusion system.
We demonstrate that at the onset of a saddle node
bifurcation, the pattern exhibits the ``critical nature''
at some time starting from a spatially homogeneous state.
We also calculate the exponents characterizing the criticality
(almost) exactly. The relevance to studies of glassy
systems is briefly discussed.