Article

 

Observation of Tkachenko Oscillations in Rapidly Rotating Bose-Einstein Condensates Öffentlichkeit Deposited

Herunterladbarer Inhalt

PDF Herunterladen
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
Zuletzt geändert
  • 2019-12-05
Resource Type
Urheberrechts-Erklärung
DOI
  • 10.1103/PhysRevLett.91.100402
ISSN
  • 0031-9007
Language

Beziehungen

Artikel