Impurity scattering in a Bose-Einstein condensate at finite temperature

Anno: 2002

Autori: Montina A.

Affiliazione autori: Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy

Abstract: We consider the effects of finite temperature on the scattering of impurity atoms in a Bose-Einstein condensate, showing that the scattering rate is enhanced by the thermal atoms. Collisions can increase or decrease the impurity energy. Below the Landau velocity only the first process occurs, i.e., the collisions cool the condensate. Above the critical velocity the dissipative collisions prevail over the cooling ones for sufficiently low temperatures. These considerations are applied to a recent experiment.

Giornale/Rivista: PHYSICAL REVIEW A

Volume: 66 (2)      Da Pagina: 23609-1  A: 23609-4

Parole chiavi: Suppression; Enhancement
DOI: 10.1103/PhysRevA.66.023609

Citazioni: 7
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-05-18
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