Bose-Einstein Condensates in Rotating Lattices
其他凝聚态物理
2009-11-11 v2
摘要
Strongly interacting bosons in 2D in a rotating square lattice are investigated via a modified Bose-Hubbard Hamiltonian. Such a system corresponds to a rotating lattice potential imprinted on a trapped Bose-Einstein condensate. Second-order quantum phase transitions between states of different symmetries are observed at discrete rotation rates. For the square lattice we study, there are four possible ground-state symmetries.
引用
@article{arxiv.cond-mat/0508584,
title = {Bose-Einstein Condensates in Rotating Lattices},
author = {Rajiv Bhat and L. D. Carr and M. J. Holland},
journal= {arXiv preprint arXiv:cond-mat/0508584},
year = {2009}
}
备注
4 pages, 5 figures, Accepted for publication in PRL v2: Replaced phase winding labels with symmetry eigenstate indices, replaced Gaussian Ansatz with more general treatment and other minor changes