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Observation of the Second Triatomic Resonance in Efimov’s Scenario

Huang, B.; Sidorenkov, L.A.; Grimm, R.; Hutson, J.M.

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B. Huang

L.A. Sidorenkov

R. Grimm


We report the observation of a three-body recombination resonance in an ultracold gas of cesium atoms at a very large negative value of the s-wave scattering length. The resonance is identified as the second triatomic Efimov resonance, which corresponds to the situation where the first excited Efimov state appears at the threshold of three free atoms. This observation, together with a finite-temperature analysis and the known first resonance, allows the most accurate demonstration to date of the discrete scaling behavior at the heart of Efimov physics. For the system of three identical bosons, we obtain a scaling factor of 21.0(1.3), close to the ideal value of 22.7.


Huang, B., Sidorenkov, L., Grimm, R., & Hutson, J. (2014). Observation of the Second Triatomic Resonance in Efimov’s Scenario. Physical Review Letters, 112(19), Article 190401.

Journal Article Type Article
Acceptance Date Feb 26, 2014
Online Publication Date May 12, 2014
Publication Date May 1, 2014
Deposit Date May 14, 2014
Publicly Available Date Jul 11, 2014
Journal Physical Review Letters
Print ISSN 0031-9007
Electronic ISSN 1079-7114
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 112
Issue 19
Article Number 190401


Published Journal Article (297 Kb)

Copyright Statement
Reprinted with permission from the American Physical Society: Phys. Rev. Lett. 112, 190401 © (2014) by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.

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