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7 papers · 2 filters
Interatomic collisions in a tightly confined Bose gas
D. S. Petrov, G. V. Shlyapnikov
We discuss pair interatomic collisions in a Bose gas tightly confined in one (axial) direction and identify two regimes of scattering. In the quasi2D regime, where the confinement…
Instability in a Two-Dimensional Dilute Interacting Bose System
W. J. Mullin, M. Holzmann, F. Laloe
The formalism of Ursell operators provides a self-consistent integral equation for the one-particle reduced operator. In three dimensions this technique yields values of the shift…
Validity of the Hohenberg Theorem for a Generalized Bose-Einstein Condensation in Two Dimensions
W. J. Mullin, M. Holzmann, F. Laloe
Several authors have considered the possibility of a generalized Bose-Einstein condensation (BEC) in which a band of low states is occupied so that the total occupation number is m…
Coherence properties of a continuous atom laser
Yvan Castin, Ralph Dum, Emmanuel Mandonnet +2
We investigate the coherence properties of an atomic beam evaporatively cooled in a magnetic guide, assuming thermal equilibrium in the quantum degenerate regime. The gas experienc…
Collision-assisted Zeeman cooling of neutral atoms
Gabriele Ferrari
We propose a new method to cool gaseous samples of neutral atoms. The gas is confined in a non dissipative optical trap in the presence of an homogeneous magnetic field. The method…
Vortex lattices in a stirred Bose-Einstein condensate
K. W. Madison, F. Chevy, W. Wohlleben +1
We stir with a focused laser beam a Bose-Einstein condensate of Rb atoms confined in a magnetic trap. We observe the formation of a single vortex for a stirring frequency ex…