Deterministic transport in ratchets.
We present the deterministic transport properties of driven overdamped particles in a simple piecewise-linear ratchet potential. We consider the effects on the stationary current due to local spatial asymmetry, time asymmetry in the driving force, and we include the possibility of a global spatial asymmetry. We present an extremely simple scheme for evaluating the current that is established on the ratchet within an "adiabatic" approximation, and compare the results with exact numerical integration of the process.
Sarmiento
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Instituto de Matemáticas, Unidad Cuernavaca, Universidad Nacional Autónoma de México, 62200 Cuernavaca, Morelos, Mexico. ansar@matcuer.unam.mx
Larralde
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