Collective excitations of a Rb-87 Bose condensate in the Thomas-Fermi regime

Year: 2000

Authors: Fort C., Prevedelli M., Minardi F., Cataliotti F. S., Ricci L., Tino G. M., Inguscio M.

Autors Affiliation: INFM, European Laboratory for Non Linear Spectroscopy (LENS)and Dipartimento di Fisica, Università di Firenze Largo E. Fermi 2, I-50125 Firenze, Italy; INFM, Dipartimento di Fisica, Università di Trento – I-38050 Trento-Povo, Italy; INFM, Dipartimento di Scienze Fisiche, Università di Napoli “Federico II” Complesso Universitario di Monte S. Angelo – via Cintia, I-80126 Napoli, Italy

Abstract: Collective excitations have been observed in a Rb-87 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.

Journal/Review: EPL

Volume: 49 (1)      Pages from: 8  to: 13

KeyWords: Phase coherent atomic ensembles; quantum
DOI: 10.1209/epl/i2000-00112-5

Citations: 33
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