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Dynamical Stability of Gap Soliton of One-Dimensional Condensate in Optical Lattices with Strong Interatomic Interaction |
| WANG Deng-Long1,2;YAN Xiao-Hong1;WANG Feng-Jiao2 |
| 1College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 2100162Department of Physics, Xiangtan University, Xiangtan 411105 |
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| Cite this article: |
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WANG Deng-Long, YAN Xiao-Hong, WANG Feng-Jiao 2007 Chin. Phys. Lett. 24 1817-1820 |
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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.
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| Keywords:
03.75.Lm
03.65.Db
03.75.Kk
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Received: 13 December 2006
Published: 25 June 2007
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| PACS: |
03.75.Lm
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(Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)
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03.65.Db
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(Functional analytical methods)
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03.75.Kk
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(Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow)
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