2014/11/27 by Zhe-Yu Shi, Hui Zhai, Xiaoling Cui · 2 citations
Physics and Astronomy · #Atom (system on chip) #Atomic physics #Bound state #Cold Atom Physics and Bose-Einstein Condensates #Coupling (piping) #Fermion #Isotropy #Molecular physics #Physics #Quantum #Quantum mechanics #Quantum, superfluid, helium dynamics #Scattering #Strong Light-Matter Interactions #Ultracold atom #cond-mat.quant-gas
paper · pdf · doi:10.1103/physreva.91.023618
published as Phys. Rev. A 91, 023618 (2015) · 12 pages, 6 figures
arxiv created 2014/11/27 · openalex publication_date 2015/02/18 · arxiv updated 2015/03/04 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study the two-body and three-body bound states in ultracold atomic mixtures with one of the atoms subjected to an isotropic spin-orbit (SO) coupling. We consider a system of two identical fermions interacting with one SO-coupled atom. It is found that there can exist two types of three-body bound states, Efimov trimers and universal trimers. The Efimov trimers are energetically less favored by the SO coupling, which will finally merge into the atom-dimer threshold as increasing the SO-coupling strength. Nevertheless, these trimers exhibit a discrete scaling law incorporating the SO-coupling effect. On the other hand, the universal trimers are more favored by the SO coupling. They can be induced at negative s-wave scattering lengths and with smaller mass ratios than those without SO coupling. These results are obtained by both the Born-Oppenheimer approximation and exact solutions from three-body equations.