Collective oscillations of a quasi-one-dimensional Bose condensate under damping

被引：2
|
作者：
Abdullaev, Fatkhulla Kh. [1 ]
Gahmzyanov, Ravil M.
Ismatullaev, Khayotullo
机构：
[1] Univ Salerno, Dipartimento Fis ER Caianiello, I-84081 Baronissi, SA, Italy
[2] Uzbek Acad Sci, Phys Tech Inst, Tashkent 700084, Uzbekistan
[3] Uzbek Acad Sci, Inst Elect, Tashkent 700125, Uzbekistan
来源：
PHYSICS LETTERS A | 2006年 / 357卷 / 01期
关键词：
D O I：
10.1016/j.physleta.2006.04.019
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Affect of the damping on collective oscillations of a quasi-one-dimensional trapped repulsive Bose gas has been studied. Based on the phenomenological damping approach [L.P. Pitaevskii, Zh. Eksp. Teor. Fiz. 35 (1958) 408, Sov. Phys. JETP 35 (1958) 282] developed by Pitaevskii variational equations for the parameters of the condensate wave function have been derived. Analytical expressions for the condensate parameters in the steady-state have been obtained. Combined effect of the resonant periodical variation of the trap strength and the damping has been shown to change drastically asymptotical behavior of the driven norm oscillations. Bistability in nonlinear oscillations of the condensate under periodic variations of the trap potential is predicted. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：48 / 53
页数：6
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