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Observation of the second triatomic resonance in Efimov’s scenario.

Huang, B. and Sidorenkov, L.A. and Grimm, R. and Hutson, J.M. (2014) 'Observation of the second triatomic resonance in Efimov’s scenario.', Physical review letters., 112 (19). p. 190401.

Abstract

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.

Item Type:Article
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Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1103/PhysRevLett.112.190401
Publisher 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.
Date accepted:26 February 2014
Date deposited:11 July 2014
Date of first online publication:12 May 2014
Date first made open access:No date available

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