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Observation of Tkachenko Oscillations in Rapidly Rotating Bose-Einstein Condensates Public Deposited
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https://scholar.colorado.edu/concern/articles/1j92g794g
- Abstract
- We directly image Tkachenko waves in a vortex lattice in a dilute-gas Bose-Einstein condensate. The low (sub-Hz) resonant frequencies are a consequence of the small but nonvanishing elastic shear modulus of the vortex-filled superfluid. The frequencies are measured for rotation rates as high as 98% of the centrifugal limit for the harmonically confined gas. Agreement with a hydrodynamic theory worsens with increasing rotation rate, perhaps due to the increasing fraction of the volume displaced by the vortex cores. We also observe two low-lying m=0 longitudinal modes at about 20 times higher frequency.
- Creator
- Date Issued
- 2003-09-05
- Academic Affiliation
- Journal Title
- Journal Issue/Number
- 10
- Journal Volume
- 91
- File Extent
- 100402-1-100402-4
- Last Modified
- 2019-12-05
- Resource Type
- Rights Statement
- DOI
- 10.1103/PhysRevLett.91.100402
- ISSN
- 0031-9007
- Language
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observationOfTkachenkoOscillationsInRapidlyRotatingBoseEi.pdf | 2019-12-05 | Public | Download | |
observationOfTkachenkoOscillationsInRapidlyRotatingBoseEi.pdf | 2019-12-05 | Public | Download |