Thermal Noise Can Facilitate Energy Conversion by Ratchet System?
Fumiko Takagi, Tsuyoshi Hondou
Abstract
Molecular motors in biological systems are expected to use ambient fluctuation. In a recent Letter [Phys. Rev. Lett. 80, 5251 (1998)], it was showed that the following question was unsolved, ``Can thermal noise facilitate energy conversion by ratchet system?'' We consider it using stochastic energetics, and show that there exist systems where thermal noise helps the energy conversion.
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