Deterministic transport in biased maps: Crossover from dispersive to regular transport

E. Barkai, J. Klafter

Research output: Contribution to journalArticlepeer-review


We investigate the influence of a weak uniform field [Formula Presented] on chaotic diffusion generated by iterated maps which, in the absence of the field, lead to subdiffusion. When [Formula Presented] the probability density [Formula Presented] of the escape times from the vicinity of the fixed points of the maps decays as a power law. When a field is switched on, [Formula Presented] decays exponentially at long enough times, with a decay rate that diverges when [Formula Presented] becomes small. The mean displacement and mean squared displacement show a transition from an anomalous type of motion, valid at short times, to a normal behavior at long times.

Original languageEnglish
Pages (from-to)5237-5246
Number of pages10
JournalPhysical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Issue number5
StatePublished - 1998


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