Direct observation of irrotational flow and evidence of superfluidity in a rotating Bose-Einstein condensate

被引：0
|
作者：
Hechenblaikner, G. [1 ]
Hodby, E. [1 ]
Hopkins, S.A. [1 ]
Maragò, O.M. [1 ]
Foot, C.J. [1 ]
机构：
[1] Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
来源：
Physical Review Letters | 2002年 / 88卷 / 07期
关键词：
Anisotropy - Aspect ratio - Differential equations - Hydrodynamics - Superfluid helium;
D O I：
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中图分类号：
学科分类号：
摘要：
The expansion of vortex-free, rotating Bose-Einstein condensates after their release from a rotating anisotropic trap was observed. Conservation of angular momentum and constraint of irrotational flow resulted in expansion of the condensate in a different way to the one released from a static trap. Results indicated an evidence of purely irrotational velocity field with a superfluid.
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页码：704061 / 704064
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