Feshbach resonance in a strictly two-dimensional atomic Bose gas

Details Feshbach resonance in a strictly two-dimensional atomic Bose gas Feshbach resonance in a strictly two-dimensional atomic Bose gas

2005-03-30

arxiv.org/abs/cond-mat/0503700v1

Physica B, Vol.353, pg. 59 (2004)

Physics

Condensed Matter

Other Condensed Matter

9 pages, 1 figure

Scientific paper

10.1016/j.physb.2004.09.001

We discuss the atom-atom scattering problem across a Feshbach resonance in a two-dimensional dilute Bose gas at zero temperature, in the limit where the s-wave scattering length exceeds the width of the vertical confinement. We determine a tunable coupling-strength parameter and by controlling it we evaluate how the condensate wave function spreads out with increasing atom-atom repulsions. We also discuss the stability of the condensate in the magnetic-field regime where the coupling has become attractive.

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