Gravity-induced resonances in a rotating trap

被引：10

作者：

Bialynicki-Birula, I ^{[1
]}

Sowinski, T ^{[1
]}

机构：

[1] Polish Acad Sci, Ctr Theoret Phys, PL-02668 Warsaw, Poland

来源：

PHYSICAL REVIEW A | 2005年 / 71卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.71.043610

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

It is shown that in an anisotropic harmonic trap that rotates with the properly chosen rotation rate, the force of gravity leads to a resonant behavior. Full analysis of the dynamics in an anisotropic, rotating trap in three dimensions is presented and several regions of stability are identified. On resonance, the oscillation amplitude of a single particle, or of the center of mass of a many-particle system (for example, BEC), grows linearly with time and all particles are expelled from the trap. The resonances can only occur when the rotation axis is tilted away from the vertical position. The positions of the resonances (there are always two of them) do not depend on the mass but only on the characteristic frequencies of the trap and on the direction of the angular velocity of rotation.

引用

页数：8

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