Generic model of an atom laser

Details Generic model of an atom laser Generic model of an atom laser

1998-06-24

arxiv.org/abs/cond-mat/9806287v2

Physics

Condensed Matter

Statistical Mechanics

15 pages, including 5 figures, submitted to Phys. Rev. A, revised manuscript, file also available at http://www.physik.uni-u

Scientific paper

10.1103/PhysRevA.58.4841

We present a generic model of an atom laser by including a pump and loss term in the Gross-Pitaevskii equation. We show that there exists a threshold for the pump above which the mean matter field assumes a non-vanishing value in steady-state. We study the transient regime of this atom laser and find oscillations around the stationary solution even in the presence of a loss term. These oscillations are damped away when we introduce a position dependent loss term. For this case we present a modified Thomas-Fermi solution that takes into account the pump and loss. Our generic model of an atom laser is analogous to the semi-classical theory of the laser.

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