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Phys. Rev. A 71, 025601 (2005) [4 pages]

Nonlinear dynamics of a dipolar Bose-Einstein condensate in an optical lattice

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Zheng-Wei Xie1,2, Ze-Xian Cao1, E. I. Kats3,4, and W. M. Liu1
1Joint Laboratory of Advanced Technology in Measurements and State Key Laboratory for Surface Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
2Department of Physics, Sichuan Normal University, Chengdu 610066, China
3Institut Laue-Langvin, Grenoble 38042, France
4L. D. Landau Institute for Theoretical Physics, Moscow 117940, Russia

Received 13 February 2003; published 15 February 2005

The dynamics of Bose-Einstein condensates in optical lattices with the long-range dipole-dipole interactions, the short-range on-site interactions, and hopping terms is reduced to the generalized discrete nonlinear Schrödinger equation. We present the different types of solitary excitations which appear in different parameter regions. We anticipate that these excitations will be observable and discuss how the model parameters can be tuned in experiments.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.71.025601
DOI:
10.1103/PhysRevA.71.025601
PACS:
03.75.Kk, 05.30.Jp, 64.60.My, 67.40.Fd
 
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