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Universality of the three-body parameter for Efimov states in ultracold cesium

Berninger, M.; Zenesini, A.; Huang, B.; Harm, W.; Nägerl, H.C.; Ferlaino, F.; Grimm, R.; Julienne, P.S.; Hutson, J.M.

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Authors

M. Berninger

A. Zenesini

B. Huang

W. Harm

H.C. Nägerl

F. Ferlaino

R. Grimm

P.S. Julienne



Abstract

We report on the observation of triatomic Efimov resonances in an ultracold gas of cesium atoms. Exploiting the wide tunability of interactions resulting from three broad Feshbach resonances in the same spin channel, we measure magnetic-field dependent three-body recombination loss. The positions of the loss resonances yield corresponding values for the three-body parameter, which in universal few-body physics is required to describe three-body phenomena and, in particular, to fix the spectrum of Efimov states. Our observations show a robust universal behavior with a three-body parameter that stays essentially constant.

Citation

Berninger, M., Zenesini, A., Huang, B., Harm, W., Nägerl, H., Ferlaino, F., …Hutson, J. (2011). Universality of the three-body parameter for Efimov states in ultracold cesium. Physical Review Letters, 107(12), Article 120401. https://doi.org/10.1103/physrevlett.107.120401

Journal Article Type Article
Publication Date Jan 1, 2011
Deposit Date Feb 2, 2012
Publicly Available Date Mar 29, 2024
Journal Physical Review Letters
Print ISSN 0031-9007
Electronic ISSN 1079-7114
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 107
Issue 12
Article Number 120401
DOI https://doi.org/10.1103/physrevlett.107.120401

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Copyright Statement
© 2011 American Physical Society




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