2018/01/19 by J. S. Li, Jiaming Li, Ji Liu +2
Chemistry · Physics and Astronomy · #Atom (system on chip) #Atomic and Molecular Physics #Atomic physics #Chemistry #Cold Atom Physics and Bose-Einstein Condensates #Feshbach resonance #Molecule #Physics #Quantum #Quantum mechanics #Quantum, superfluid, helium dynamics #Recombination #Resonance (particle physics) #Ultracold atom #cond-mat.quant-gas #van der Waals force
paper · pdf · doi:10.1103/physrevlett.120.193402
published as Phys. Rev. Lett. 120, 193402 (2018) · 6 pages,7 figures, 1 table
openalex created_date 2017/02/10 · arxiv created 2018/01/19 · openalex publication_date 2018/05/10 · arxiv updated 2018/05/16 · openalex updated_date 2026/08/06
We experimentally measure and theoretically analyze the three-atom recombination rate, L3, around a narrow s-wave magnetic Feshbach resonance of 6Li-6Li at 543.3 G. By examining both the magnetic field dependence and, especially, the temperature dependence of L3 over a wide range of temperatures from a few μK to above 200 μK, we show that three-atom recombination through a narrow resonance follows a universal behavior determined by the long-range van der Waals potential and can be described by a set of rate equations in which three-body recombination proceeds via successive pairwise interactions. We expect the underlying physical picture to be applicable not only to narrow s wave resonances, but also to resonances in nonzero partial waves, and not only at ultracold temperatures, but also at much higher temperatures.