Observation of the Second Triatomic Resonance in Efimov’s Scenario

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

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.

Citation

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. https://doi.org/10.1103/physrevlett.112.190401

• 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
• DOI: https://doi.org/10.1103/physrevlett.112.190401