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Very High Precision Bound State Spectroscopy near a 85Rb Feshbach Resonance Public Deposited

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https://scholar.colorado.edu/concern/articles/00000068n
Abstract
  • We precisely measured the binding energy (εbind) of a molecular state near the Feshbach resonance in a ⁸⁵Rb Bose-Einstein condensate (BEC). Rapid magnetic-field pulses induced coherent atom-molecule oscillations in the BEC. We measured the oscillation frequency as a function of B field and fit the data to a coupled-channel model. Our analysis constrained the Feshbach resonance position [155.041(18) G], width [10.71(2) G], and background scattering length [−443(3)a₀] and yielded new values for the Rb interaction parameters. These results improved our estimate for the stability condition of an attractive BEC. We also found evidence for a mean-field shift to εbind.

Creator
Date Issued
  • 2003-06-20
Academic Affiliation
Journal Title
Journal Issue/Number
  • 6
Journal Volume
  • 67
File Extent
  • 060701-1-060701-4
Last Modified
  • 2020-01-14
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DOI
  • 10.1103/PhysRevA.67.060701
ISSN
  • 1050-2947
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