- 99-324 Luca Salasnich (INFM and Univ. Milano)
- Time-Dependent Variational Approach to Bose-Einstein Condensation
Sep 5, 99
(auto. generated ps),
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Abstract. We discuss the mean-field approximation for a trapped
condensate (BEC) and its connection with the exact many-body problem
by deriving the Gross-Pitaevskii action of the condensate.
The mechanics of the BEC in a harmonic potential
is studied by using a variational
approach with time-dependent Gaussian trial wave-functions.
we analyze the static configurations, the stability
and the collective oscillations for both ground-state and vortices.
(Submitted to Int. J. Mod. Phys. B).