Reconstruction of Rb-Rb inter-atomic potential from ultracold Bose-gas collision

Details Reconstruction of Rb-Rb inter-atomic potential from ultracold Bose-gas collision Reconstruction of Rb-Rb inter-atomic potential from ultracold Bose-gas collision

2007-02-24

arxiv.org/abs/cond-mat/0702568v1

J. Phys. B: At. Mol. Opt. Phys. vol. 41 035302 (2008)

Physics

Condensed Matter

Other Condensed Matter

4 pages, 4 figures

Scientific paper

10.1088/0953-4075/41/3/035302

Scattering phase shifts obtained from 87Rb Bose-gas collision experiments are used to reconstruct effective potentials resulting, self-consistently, in the same scattering events observed in the experiments at a particular energy. We have found that the interaction strength close to the origin suddenly changes from repulsion to attraction when the collision energy crosses, from below, the l=2 shape resonance position at E = 275 mikroK. This observation may be utilized in outlining future Bose-gas collision experiments.

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