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cond-mat.stat-mech2005
Breakdown of Heterogeneous Materials
Purusattam Ray
We discuss the threshold activated extremal dynamics that is prevalent in the breakdown processes in heterogeneous materials. We model such systems by an elastic spring network wit…
cond-mat.stat-mech2004
Persistence in extended dynamical systems
Purusattam Ray
Persistence in spatially extended dynamical systems (like coarsening systems and other nonequilibrium systems) is reviewed. We discuss, in particular, the spatial correlations in t…