Rectification of Fluctuations in an Underdamped Ratchet

Abstract

We investigate analytically the motion of underdamped particles subject to a deterministic periodic potential and a periodic temperature. Despite the fact that an underamped particle experiences the temperature oscillation many times in its escape out of a well and in its motion along the potential, a net directed current linear in the friction constant is found. If both the potential and the temperature modulation are sinusoidal with a phase lag $\delta$, this current is proportional to $\sin \delta$.

4 pages REVTEX, 2 figures included

References in corpus (1)

• Cooperative Transport of Brownian Particles

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