Coherent structures of Bose‐Einstein condensates in optical lattices
作者:
B. B. Baizakov,
V. V. Konotop,
M. Salerno,
期刊:
AIP Conference Proceedings
(AIP Available online 1903)
卷期:
Volume 695,
issue 1
页码: 126-134
ISSN:0094-243X
年代: 1903
DOI:10.1063/1.1639583
出版商: AIP
数据来源: AIP
摘要:
We propose to employ the phenomenon of modulational instability in order to create regularly arranged localized excitations in arrays of Bose‐Einstein condensates. These excitations are narrow tubes in 2D and small hollows in 3D arrays filled in with the condensed atoms of much greater density compared to surrounding array sites. As the regions with high atomic concentration develop due to the modulational instability, they can be preserved by increasing the strength of the optical lattice. Theoretical model, based on the multiple scale expansion, describes the main features of the phenomenon. Analytical predictions are confirmed by numerical simulations of the Gross‐Pitaevskii equation. © 2003 American Institute of Physics
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