抄録
We study superfluidity of supersolid phases of dipolar Bose gases in two-dimensional optical lattices. We perform linear stability analyses for the corresponding dipolar Bose-Hubbard model in the hard-core boson limit to show that a supersolid can have stable superflow until the flow velocity reaches a certain critical value. The critical velocity for the supersolid is found to be significantly smaller than that for a conventional superfluid phase. We propose that the critical velocity can be used as a signature to identify the superfluidity of the supersolid phase in experiment.
本文言語 | English |
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論文番号 | 013645 |
ジャーナル | Physical Review A - Atomic, Molecular, and Optical Physics |
巻 | 82 |
号 | 1 |
DOI | |
出版ステータス | Published - 2010 7月 30 |
ASJC Scopus subject areas
- 原子分子物理学および光学