Ground-State Properties of Magnetically Trapped Bose-Condensed Rubidium Gas

Details Ground-State Properties of Magnetically Trapped Bose-Condensed Rubidium Gas Ground-State Properties of Magnetically Trapped Bose-Condensed Rubidium Gas

1995-08-11

arxiv.org/abs/cond-mat/9508040v2

Physics

Condensed Matter

Minor modification of numbers; 9 pages, RevTex, no figures

Scientific paper

10.1103/PhysRevLett.76.6

We give a quantitative account of the ground-state properties of the dilute magnetically trapped $^{87}$Rb gas recently cooled and Bose-Einstein condensed at nanokelvin-scale temperatures. Using simple scaling arguments, we show that at large particle number the kinetic energy is a small perturbation, and find a spatial structure of the cloud of atoms and its momentum distribution dependent in an essential way on particle interactions. We also estimate the superfluid coherence length and the critical angular velocity at which vortex lines become energetically favorable.

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