期刊
PHYSICAL REVIEW LETTERS
卷 110, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.065301
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资金
- Polish National Science Center [DEC-2011/01/N/ST2/02549, DEC-2012/04/A/ST2/00088]
- Polish Innovation Economy Operational Program [POIG.02.01.00-12-023/08]
Cold atoms in optical lattices allow for accurate studies of many body dynamics. Rapid time-dependent modifications of optical lattice potentials may result in significant excitations in atomic systems. The dynamics in such a case is frequently quite incompletely described by standard applications of tight-binding models (such as, e.g., Bose-Hubbard model or its extensions) that typically neglect the effect of the dynamics on the transformation between the real space and the tight-binding basis. We illustrate the importance of a proper quantum mechanical description using a multiband extended Bose-Hubbard model with time-dependent Wannier functions. We apply it to situations directly related to experiments. DOI: 10.1103/PhysRevLett.110.065301
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