Phenomenological damping in trapped atomic Bose-Einstein condensates
Seok Jin ChoiClarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, United KingdomS. A. MorganClarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, United KingdomK. BurnettClarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
1998en
ABI
Annotatsiya
The method of phenomenological damping developed by Pitaevskii (Zh. Eksp. Teor. Fiz. 35, 408 (1958) [Sov. Phys. JETP 35, 282 (1959)]) for superfluidity near the $\ensuremath{\lambda}$ point is simulated numerically for the case of a dilute, alkali, inhomogeneous Bose-condensed gas near absolute zero. We study several features of this method in describing the damping of excitations in a Bose-Einstein condensate. In addition, we show that the method may be employed to obtain numerically accurate ground states for a variety of trap potentials.
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