Abstract
We introduce a choice of reference wave functions that allows multichannel quantum defect theory (MQDT) to describe ultracold collisions involving high-partial-wave quantum numbers . This requires a careful standardization of the MQDT reference wave functions at long range to ensure their linear independence. To illustrate the simplicity and accuracy of the resulting theory, we perform a comprehensive calculation of Fano-Feshbach resonances in the range G for the scattering of in their lowest hyperfine states. Moreover, we derive analytic expressions for our universal set of MQDT parameters in the threshold regime.
- Received 7 January 2013
DOI:https://doi.org/10.1103/PhysRevA.87.032706
©2013 American Physical Society