Multichannel Quantum-Defect Theory for Slow Atomic Collisions
B Gao, Eite Tiesinga, Carl J. Williams, Paul S. Julienne
We present a multichannel quantum-defect theory for slow atomic collisions that takes advantages of the analytic solutions for the long-range potential, and both the energy and the angular-momentum insensitivities of the short-range parameters. The theory provides an accurate and complete account of scattering processes, including shape and Feshbach resonances, in terms of a few parameters such as the singlet and the triplet scattering lengths. As an example, results for ^23}Na-^23}Na scattering are presented and compared close-coupling calculations.
Physical Review A (Atomic, Molecular and Optical Physics)
, Tiesinga, E.
, Williams, C.
and Julienne, P.
Multichannel Quantum-Defect Theory for Slow Atomic Collisions, Physical Review A (Atomic, Molecular and Optical Physics)
(Accessed May 31, 2023)