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Damping and revivals of collective oscillations in a finite-temperature model of trapped Bose-Einstein condensation

B. Jackson·C. S. Adams
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Abstract

We utilize a two-gas model to simulate collective oscillations of a Bose-Einstein condensate at finite temperatures. The condensate is described using a generalized Gross-Pitaevskii equation, which is coupled to a thermal cloud modelled by a Monte Carlo algorithm. This allows us to include the collective dynamics of both the condensed and non-condensed components self-consistently. We simulate quadrupolar excitations, and measure the damping rate and frequency as a function of temperature. We also observe revivals in condensate oscillations at high temperatures, and in the thermal cloud at low temperature. Extensions of the model to include non-equilibrium effects and describe more complex phenomena are discussed.

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BibTeXRIS

B. Jackson, C. S. Adams. 2000-09-29. Damping and revivals of collective oscillations in a finite-temperature model of trapped Bose-Einstein condensation. https://doi.org/10.1103/physreva.63.053606

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