Anomalous Growth of the Diffusion in Space-Periodic Systems with a Low Energy Dissipation
Abstract
Computer simulation methods were used to investigate the particle diffusion in the periodic spatial potential under constant force exposure. The paper shows that, unlike a superdamped case, in the systems with weak energy dissipation a new critical force value arises due to the appearance of a fork-like bifurcation point. About this point an exponential growth of the diffusion coefficient with temperature decreasing is observed. It is noted that the time of transition to the steady-state distribution tends to infinity while the temperature tends to zero.
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