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

G. Hechenblaikner; E. Hodby; S. A. Hopkins; O. M. Maragò; C. J. Foot

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

G. Hechenblaikner, E. Hodby, S. A. Hopkins, O. M. Maragò, C. J. Foot

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	704061-704064
Number of pages	3
Journal	Physical Review Letters
Volume	88
Issue number	7
Publication status	Published - 18 Feb 2002

Cite this

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title = "Direct observation of irrotational flow and evidence of superfluidity in a rotating Bose-Einstein condensate",

abstract = "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.",

author = "G. Hechenblaikner and E. Hodby and Hopkins, {S. A.} and Marag{\`o}, {O. M.} and Foot, {C. J.}",

year = "2002",

month = feb,

day = "18",

language = "English",

volume = "88",

pages = "704061--704064",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "7",

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TY - JOUR

T1 - Direct observation of irrotational flow and evidence of superfluidity in a rotating Bose-Einstein condensate

AU - Hechenblaikner, G.

AU - Hodby, E.

AU - Hopkins, S. A.

AU - Maragò, O. M.

AU - Foot, C. J.

PY - 2002/2/18

Y1 - 2002/2/18

N2 - 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.

AB - 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.

M3 - Article

SN - 0031-9007

VL - 88

SP - 704061

EP - 704064

JO - Physical Review Letters

JF - Physical Review Letters

IS - 7

ER -

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

Abstract

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