Multiplet Structure of Feshbach Resonances in non-zero partial waves

Details Multiplet Structure of Feshbach Resonances in non-zero partial waves Multiplet Structure of Feshbach Resonances in non-zero partial waves

2003-10-24

arxiv.org/abs/physics/0310121v1

Phys Rev. A 69, 42712 (2004)

Physics

Atomic Physics

Scientific paper

10.1103/PhysRevA.69.042712

We report a unique feature of magnetic field Feshbach resonances in which atoms collide with non-zero 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 ultra-cold gas of atoms. A parameterization of the resonance in terms of an effective range expansion is given.

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