期刊
PHYSICAL REVIEW A
卷 79, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.79.063612
关键词
Bose-Einstein condensation; Hubbard model; optical lattices; tunnelling
资金
- Ramon y Cajal program of the Spanish MCINN
We investigate the dynamics of a Bose-Einstein condensate held in an optical lattice under the influence of a strong periodic driving potential. Studying the mean-field version of the Bose-Hubbard model reveals that the condensate becomes dynamically unstable when the effective intersite tunneling becomes negative. We further show how controlling the sign of the tunneling can be used to manage the dispersion of an atomic wave packet.
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