2003/10/24 by Christopher Ticknor, C. Ticknor, C. A. Regal +3 · 7 citations
Physics and Astronomy · #Angular momentum #Angular momentum coupling #Anisotropy #Atomic and Subatomic Physics Research #Atomic physics #Cold Atom Physics and Bose-Einstein Condensates #Dipole #Feshbach resonance #Magnetic dipole #Magnetic field #Multiplet #Physics #Quantum mechanics #Quantum, superfluid, helium dynamics #Resonance (particle physics) #Spectral line #Total angular momentum quantum number #physics.atom-ph
paper · pdf · doi:10.1103/physreva.69.042712
published as Phys Rev. A 69, 42712 (2004)
arxiv created 2003/10/24 · openalex publication_date 2004/04/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We report a unique feature of magnetic-field Feshbach resonances in which atoms collide with nonzero orbital angular momentum. p-wave (l=1) Feshbach resonances are split into two components depending on the magnitude of the resonant state's projection of orbital angular momentum onto the field axis. This splitting is due to the magnetic dipole-dipole interaction between the atoms and it offers a means to tune anisotropic interactions of an ultracold gas of atoms. Furthermore this splitting in the p-wave Feshbach resonance has been experimentally observed and is reported. A parametrization of the p-wave resonance in terms of an effective-range expansion is given.