摘要By developing the multiple scales method, we analytically study the dynamics properties of gap soliton of Bose--Einstein condensate in optical lattices. It is shown that the gap soliton will appear at Brillouin zone edge of linear band spectrum of the condensates when the interatomic interaction strength is larger than the lattice depth. Moreover, the density of gap soliton starts to be relatively small, while it increases with time and becomes stable.
Abstract：By developing the multiple scales method, we analytically study the dynamics properties of gap soliton of Bose--Einstein condensate in optical lattices. It is shown that the gap soliton will appear at Brillouin zone edge of linear band spectrum of the condensates when the interatomic interaction strength is larger than the lattice depth. Moreover, the density of gap soliton starts to be relatively small, while it increases with time and becomes stable.
(Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow)
引用本文:
WANG Deng-Long;YAN Xiao-Hong;WANG Feng-Jiao. Dynamical Stability of Gap Soliton of One-Dimensional Condensate in Optical Lattices with Strong Interatomic Interaction[J]. 中国物理快报, 2007, 24(7): 1817-1820.
WANG Deng-Long, YAN Xiao-Hong, WANG Feng-Jiao. Dynamical Stability of Gap Soliton of One-Dimensional Condensate in Optical Lattices with Strong Interatomic Interaction. Chin. Phys. Lett., 2007, 24(7): 1817-1820.
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