Chin. Phys. Lett.  2002, Vol. 19 Issue (10): 1413-1415    DOI:
Original Articles |
Phonon Spectrum and Modulational Instability in a Bose-Einstein Condensate Array
YANG Xiao-Xue1;WU Ying1,2
1State Key Laboratory for Laser Technique and Department of Physics, Huazhong University of Science and Technology, Wuhan 430074 2Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071
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YANG Xiao-Xue, WU Ying 2002 Chin. Phys. Lett. 19 1413-1415
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Abstract We derive the phonon spectrum and the corresponding modulational instability conditions of an array of traps containing Bose-Einstein mcondensates with each trap linked to adjacent traps by tunneling. It is shown that modulational instability regimes always exist regardless of the sign of the two-body interaction.

Keywords: 03.75.Fi      42.65.-k      42.50.Ar      42.81.Dp     
Published: 01 October 2002
PACS:  03.75.Fi  
  42.65.-k (Nonlinear optics)  
  42.50.Ar  
  42.81.Dp (Propagation, scattering, and losses; solitons)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2002/V19/I10/01413
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