Quantum instability of a Bose-Einstein condensate with attractive interaction

被引：26

作者：

Berman, GP ^{[1
]}

Smerzi, A

Bishop, AR

机构：

[1] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

[2] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.88.120402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the quantum and the mean-field Gross-Pitaevskii ( GP) dynamics of a Bose-Einstein condensate gas confined in a toroidal trap. According to GP, if the interatomic interaction is attractive, the rotational states of the system can be dynamically stable or unstable depending on the strength of the mean-field energy. The full quantum analysis, however, reveals that the condensate is always unstable. Quantum fluctuations are particularly important close to the GP stability borderline, even for systems with a relatively large number of condensate atoms.

引用

页码：4 / 120402

页数：4

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