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Chaotic Transport and Current Reversal in Deterministic Ratchets

2000; American Physical Society; Volume: 84; Issue: 2 Linguagem: Inglês

10.1103/physrevlett.84.258

1092-0145

José L. Mateos,

Advanced Thermodynamics and Statistical Mechanics

We address the problem of the classical deterministic dynamics of a particle in a periodic asymmetric potential of the ratchet type. We take into account the inertial term in order to understand the role of the chaotic dynamics in the transport properties. By a comparison between the bifurcation diagram and the current, we identify the origin of the current reversal as a bifurcation from a chaotic to a periodic regime. Close to this bifurcation, we observed trajectories revealing intermittent chaos and anomalous deterministic diffusion.