Comment on "Coherent Ratchets in Driven Bose-Einstein Condensates"
Quantum Gases
2010-06-08 v3
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.
Cite
@article{arxiv.0912.3667,
title = {Comment on "Coherent Ratchets in Driven Bose-Einstein Condensates"},
author = {G. Benenti and G. Casati and S. Denisov and S. Flach and P. Hanggi and B. Li and D. Poletti},
journal= {arXiv preprint arXiv:0912.3667},
year = {2010}
}
Comments
revised version