Starts 22 Mar 2012 14:30
Ends 22 Mar 2012 20:00
Central European Time
Leonardo da Vinci Building Euler Lecture Hall
Strada Costiera, 11 I - 34151 Trieste (Italy)
Disordered systems typically respond non-smoothly to external driving. This manifests itself in Barkhausen noise, earthquakes and avalanches in granular media. A simple classical model which describes such phenomena quite accurately is a particle driven by a spring on a Brownian random-force landscape (also known as the ABBM model). I will present some analytical results on statistics of avalanches in this model. I will then show how the ABBM model arises as the mean-field limit of a spatially extended elastic interface in a disordered environment. In the end I will discuss the behavior below the upper critical dimension using renormalization-group methods.
  • M. Poropat