Damping and frequency shift in the oscillations of two colliding Bose-Einstein condensates

Details Damping and frequency shift in the oscillations of two colliding Bose-Einstein condensates Damping and frequency shift in the oscillations of two colliding Bose-Einstein condensates

2001-06-05

arxiv.org/abs/cond-mat/0106072v1

Eur. Phys. J. D 17, 345 (2001)

Physics

Condensed Matter

5 RevTex pages, 7 eps figures

Scientific paper

10.1007/s100530170009

We have investigated the center-of-mass oscillations of a Rb87 Bose-Einstein condensate in an elongated magneto-static trap. We start from a trapped condensate and we transfer part of the atoms to another trapped level, by applying a radio-frequency pulse. The new condensate is produced far from its equilibrium position in the magnetic potential, and periodically collides with the parent condensate. We discuss how both the damping and the frequency shift of the oscillations are affected by the mutual interaction between the two condensates, in a wide range of trapping frequencies. The experimental data are compared with the prediction of a mean-field model.

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