On the enhancement of impurity collisions in a Bose-Einstein condensate

Year: 2003

Authors: Cardone F., Mignani R., Perconti W.

Autors Affiliation: Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy;
Dipartimento di Fisica “E.Amaldi,” Università degli Studi “Roma Tre,” Via della Vasca Navale, 84 – 00146 Roma, Italy
I.N.F.N. – Sezione di Roma III, Italy;
Dipartimento di Fisica, Università dell’Aquila, Via Vetoio – 67010 Coppito, L’Aquila, Italy

Abstract: We present a possible explanation of the discrepancy between theory and experiment (observed by Chikkatur et al.) in the collisional density of impurities in a Bose-Einstein condensate of sodium atoms. The discrepancy is ascribed to the fact that the experiment was carried out in a situation of strong instability, where small variations of the initial number of impurities in the condensate may give rise to a large variation in the number of colliding atoms.

Journal/Review: MODERN PHYSICS LETTERS B

Volume: 17 (22)      Pages from: 1143  to: 1149

KeyWords: Bose–Einstein condensation; impurities; collisional density
DOI: 10.1142/S0217984903006141

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