Optimal operation of feedback flashing ratchets

Details Optimal operation of feedback flashing ratchets Optimal operation of feedback flashing ratchets

2008-09-04

arxiv.org/abs/0809.0809v2

J. Stat. Mech. (2009) P01031

Physics

Condensed Matter

Statistical Mechanics

LaTeX, 5 pages, 2 figures. Presented at the 5th International Conference on Unsolved Problems on Noise (UPON'08). Selected to

Scientific paper

10.1088/1742-5468/2009/01/P01031

Feedback flashing ratchets are thermal rectifiers that use information on the state of the system to operate the switching on and off a periodic potential. We discuss different strategies for this operation with the aim of maximizing the net flux of particles in the collective version of a flashing ratchet consisting on N overdamped Brownian particles. We show the optimal protocols for the one-particle ratchet and for the collective ratchet with an infinite number of particles. Finally we comment on the unsolved problem of the optimal strategy for any other number of particles.

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