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arXiv · 0912.3667

Comment on "Coherent Ratchets in Driven Bose-Einstein Condensates"

G. Benenti·G. Casati·S. Denisov·S. Flach·P. Hanggi·B. Li·D. Poletti
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Abstract

C. E. Creffield and F. Sols (Phys. Rev. Lett. 103, 200601 (2009)) recently reported finite, directed time-averaged ratchet current, for a noninteracting quantum particle in a periodic potential even when time-reversal symmetry holds. As we explain in this Comment, this result is incorrect, that is, time-reversal symmetry implies a vanishing current.

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G. Benenti, G. Casati, S. Denisov, S. Flach, P. Hanggi, B. Li, D. Poletti. 2010-06-07. Comment on "Coherent Ratchets in Driven Bose-Einstein Condensates". https://doi.org/10.1103/physrevlett.104.228901

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