Dynamical features in coarsening soap froth: Topological approach

We summarize some recent developments in approximate descriptions of soap froth evolution in 2D. The questions addressed concern temporal correlations in the scaling state, characterization of transient behavior and evolution from very special initial states. We observed that for these delicate issues mean field theory fails; moreover, we found that widely accepted topological simulation methods also disagree significantly with experiments. We identified the source of these discrepancies in the manner the models select the topological rearrangement that follows a bubble's disappearance. Properly modified topological simulations do yield agreement with experiments. Our analysis allows identification of the manner in which different aspects of the microscopic dynamics affect the long time behavior of the system.