Geometric Scaling of Efimov States in aLi<mml:mprescripts/><mml:none/>6−Cs<mml:mprescripts/><mml:none/>133Mixture

2014/02/28 by Shih-Kuang Tung, Karina Jimenez-Garcia, Karina Jiménez-García +4 · 10 citations
Physics and Astronomy · #Advanced Chemical Physics Studies #Cold Atom Physics and Bose-Einstein Condensates #Geometry #Heteronuclear molecule #Lambda #Mathematical physics #Molecule #Physics #Quantum mechanics #Quantum, superfluid, helium dynamics #Scaling #Series (stratigraphy) #cond-mat.quant-gas #nucl-th #quant-ph

paper · pdf · doi:10.1103/physrevlett.113.240402

published as Phys. Rev. Lett. 113, 240402 (2014) · 12 pages, 11 figures including supplemental material

openalex publication_date 2014/12/09 · arxiv created 2014/12/10 · arxiv updated 2014/12/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

In few-body physics, Efimov states are an infinite series of three-body bound states that obey universal discrete scaling symmetry when pairwise interactions are resonantly enhanced. Despite abundant reports of Efimov states in recent cold atom experiments, direct observation of the discrete scaling symmetry remains an elusive goal. Here we report the observation of three consecutive Efimov resonances in a heteronuclear Li-Cs mixture near a broad interspecies Feshbach resonance. The positions of the resonances closely follow a geometric series 1, λ, λ². The observed scaling constant λ(exp)=4.9(4) is in good agreement with the predicted value of 4.88.

Citations

• Feshbach resonances in ultracold gases
• Collisional Stability of a Three-Component Degenerate Fermi Gas
• Feshbach resonances, weakly bound molecular states, and coupled-channel potentials for cesium at high magnetic fields
• Evidence for Efimov quantum states in an ultracold gas of caesium atoms
• Limits on Universality in Ultracold Three-Boson Recombination

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