State-Dependent Noise and Interface Propagation
After some initial remarks about studies of complexity, motion in multistable systems, in which noise depends on the state of the system, is analyzed. The blowtorch theorem is reviewed, emphasizing that relative stability, in systems with competing states of local stability, depends on the noise along the whole path connecting the competing states. Kink motion in extended one-dimensional systems is reviewed. Kink motion in systems with state-dependent noise is treated through a heuristic approximation. Adding noise to the state on one side of a kink is equivalent to a bias force favoring the other state.
KeywordsEntropy Production Local Stability Free Energy Difference Interface Propagation Bias Force
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