Non-equilibrium dynamics: Studies of reflection of Bose-Einstein condensates

Details Non-equilibrium dynamics: Studies of reflection of Bose-Einstein condensates Non-equilibrium dynamics: Studies of reflection of Bose-Einstein condensates

2006-11-10

arxiv.org/abs/cond-mat/0611279v1

Laser Physics, vol. 17, 527 (2007)

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

10.1134/S1054660X07040354

The study of the non-equilibrium dynamics in Bose-Einstein condensed gases has been dominated by the zero-temperature, mean field Gross-Pitaevskii formalism. Motivated by recent experiments on the reflection of condensates from silicon surfaces, we revisit the so-called {\em classical field} description of condensate dynamics, which incorporates the effects of quantum noise and can also be generalized to include thermal effects. The noise is included in a stochastic manner through the initial conditions. We show that the inclusion of such noise is important in the quantitative description of the recent reflection experiments.

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