2018/09/09 by Juan Yao, Pengfei Zhang, Ran Qi +1 · 4 citations
Mathematics · Physics and Astronomy · #Atom (system on chip) #Atomic and Subatomic Physics Research #Atomic physics #Boson #Cold Atom Physics and Bose-Einstein Condensates #Degenerate energy levels #Mathematical analysis #Mathematics #Monotonic function #Physics #Quantum mechanics #Resonance (particle physics) #Strong Light-Matter Interactions #cond-mat.quant-gas
paper · pdf · doi:10.1103/physreva.99.012701
published in Physical Review A 99(1) (American Physical Society)
arxiv created 2018/09/09 · openalex publication_date 2019/01/02 · arxiv updated 2019/01/09 · openalex created_date 2019/07/30 · openalex updated_date 2026/08/05
Motivated by recent experimental progresses, we investigate few-body properties of interacting spinless bosons near a d-wave resonance. Using the Skorniakov-Ter-Martirosion (STM) equations, we calculate the scattering length between an atom and a d-wave dimer, and we find that the atom-dimer scattering length is positive and is much smaller the result from the mean-field approximation. We also reveal unique properties of the three-body recombination rate for a degenerate Bose condensate near the d-wave resonance. We find that the total recombination rate is nearly a constant at the quasibound side, in contrast to the behavior of a thermal gas near a high-partial-wave resonance. We also find that the recombination rate monotonically increases across the unitary point toward the bound side, which is due to the largely enhanced coupling between the atom and the d-wave dimer with deeper binding energy. This monotonic behavior is also qualitatively different from that of a degenerate gas near an s-wave resonance counterpart.