Gap solitons in Bose-Einstein condensates in linear and nonlinear optical lattices

被引：85
作者：
Abdullaev, Fatkhulla
Abdumalikov, Abdulaziz
Galimzyanov, Ravil
机构：
[1] Uzbek Acad Sci, Phys Tech Inst, Tashkent 700084, Uzbekistan
[2] Univ Estadual Paulista, Inst Fis Teor, BR-01405900 Sao Paulo, Brazil
来源：
PHYSICS LETTERS A | 2007年 / 367卷 / 1-2期
基金：
巴西圣保罗研究基金会;
关键词：
D O I：
10.1016/j.physleta.2007.02.067
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Properties of localized states on array of BEC confined to a potential, representing superposition of linear and nonlinear optical lattices are investigated. For a shallow lattice case the coupled mode system has been derived. We revealed new types of gap solitons and studied their stability. For the first time a moving soliton solution has been found. Analytical predictions are confirmed by numerical simulations of the Gross-Pitaevskii equation with jointly acting linear and nonlinear periodic potentials. (c) 2007 Elsevier B.V. All rights reserved.
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收藏
页码：149 / 155
页数：7
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