Phys. Rev. Lett. 105, 103203 (2010) [4 pages]Nuclear-Spin-Independent Short-Range Three-Body Physics in Ultracold AtomsReceived 25 March 2010; revised 31 May 2010; published 3 September 2010 We investigate three-body recombination loss across a Feshbach resonance in a gas of ultracold 7Li atoms prepared in the absolute ground state and perform a comparison with previously reported results of a different nuclear-spin state [ N. Gross et al. Phys. Rev. Lett. 103 163202 (2009)]. We extend the previously reported universality in three-body recombination loss across a Feshbach resonance to the absolute ground state. We show that the positions and widths of recombination minima and Efimov resonances are identical for both states which indicates that the short-range physics is nuclear-spin independent. © 2010 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.105.103203
DOI:
10.1103/PhysRevLett.105.103203
PACS:
34.50.-s, 21.45.-v, 67.85.-d
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