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Article Dans Une Revue Physical Review A : Atomic, molecular, and optical physics [1990-2015] Année : 2003

Scissors mode of a rotating Bose-Einstein condensate

Marco Cozzini
  • Fonction : Auteur
Sandro Stringari
  • Fonction : Auteur
Peter Rosenbusch
  • Fonction : Auteur
Jean Dalibard

Résumé

A scissors mode of a rotating Bose-Einstein condensate is investigated both theoretically and experimentally. The condensate is confined in an axi-symmetric harmonic trap, superimposed with a small rotating deformation. For angular velocities larger than $\omega_\perp/\sqrt2 $, where $\omega_\perp$ is the radial trap frequency, the frequency of the scissors mode is predicted to vanish like the square root of the deformation, due to the tendency of the system to exhibit spontaneous rotational symmetry breaking. Measurements of the frequency confirm the predictions of theory. Accompanying characteristic oscillations of the internal shape of the condensate are also calculated and observed experimentally.

Dates et versions

hal-00002527 , version 1 (12-08-2004)

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Citer

Marco Cozzini, Sandro Stringari, Vincent Bretin, Peter Rosenbusch, Jean Dalibard. Scissors mode of a rotating Bose-Einstein condensate. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2003, 67, pp.021602. ⟨hal-00002527⟩
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