Amplification of local instabilities in a Bose-Einstein condensate with attractive interactions

被引：23

作者：

Chin, JK

Vogels, JM

Ketterle, W

机构：

[1] MIT, MIT Harvard Ctr Ultracold Atoms, Dept Phys, Cambridge, MA 02139 USA

[2] MIT, Elect Res Lab, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.90.160405

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the collapse of large homogeneous Bose-Einstein condensates due to intrinsic attractive interactions. We observe the amplification of a local instability by seeding a momentum state p and suddenly switching the scattering length negative via a Feshbach resonance. We also observe the appearance of atoms in the conjugate momentum state as required by momentum conservation. For large condensates, the time scale for this depletion process becomes faster than that for global collapse.

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页码：160405/1 / 160405/4

页数：4

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