Quantum effects on dynamics of instabilities in Bose-Einstein condensates

被引：52
|
作者：
Yurovsky, VA
机构：
[1] Harvard Smithsonian Ctr Astrophys, Inst Theoret Atom & Mol Phys, Cambridge, MA 02138 USA
[2] Natl Inst Stand & Technol, Atom Phys Div, Gaithersburg, MD 20899 USA
[3] Tel Aviv Univ, Sch Chem, IL-69978 Tel Aviv, Israel
来源：
PHYSICAL REVIEW A | 2002年 / 65卷 / 03期
关键词：
D O I：
10.1103/PhysRevA.65.033605
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Dynamics of fluctuations in unstable Bose-Einstein condensates is analyzed by the solution of approximate operator equations. In the case of a condensate with a negative scattering length the present treatment describes a delay of collapse, in agreement with recent experiments. In the case of a collision of two condensate wave packets it is shown that quantum effects lead to a Bose enhancement of elastic-scattering losses. In both cases the noncondensate atoms are formed as entangled pairs in squeezed states.
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