Collective excitations have been observed in a 87Rb Bose condensate, confined in a magneto-static, elongated, harmonic trap. We have measured the frequency of two different modes with zero angular momentum along the symmetry axis of the trap. Both the frequencies are in good agreement with the values predicted by the hydrodynamic theory of superfluids holding in the Thomas-Fermi regime.
Collective excitations of a 87Rb Bose condensate in the Thomas-Fermi regime / C. FORT; M. PREVEDELLI; F. MINARDI; F. CATALIOTTI; L. RICCI; G. TINO; M. INGUSCIO. - In: EUROPHYSICS LETTERS. - ISSN 0295-5075. - STAMPA. - 49:(2000), pp. 8-13. [10.1209/epl/i2000-00112-5]
Collective excitations of a 87Rb Bose condensate in the Thomas-Fermi regime
FORT, CHIARA;PREVEDELLI, MARCO;CATALIOTTI, FRANCESCO SAVERIO;TINO, GUGLIELMO MARIA;INGUSCIO, MASSIMO
2000
Abstract
Collective excitations have been observed in a 87Rb Bose condensate, confined in a magneto-static, elongated, harmonic trap. We have measured the frequency of two different modes with zero angular momentum along the symmetry axis of the trap. Both the frequencies are in good agreement with the values predicted by the hydrodynamic theory of superfluids holding in the Thomas-Fermi regime.
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