Classical, Quantal and Semiclassical Propagators and Applications to Elastic Scattering

B.J.B. Crowley

Jörn Knoll, R. Schaeffer

Kenneth W. Ford, JOHN ARCHIBALD WHEELER

Jicai Zhang, Kedong Wang, Yufang Liu +1 more

The elastic scattering properties in a mixture of sodium and cesium atoms are investigated at cold and ultracold temperatures. Based on the accurate interatomic potential for the NaCs mixture, the interspecies s-wave scattering lengths, the effective ranges and the p-wave scattering lengths are calculated by the quantal method and the semiclassical method, respectively. The s-wave scattering lengths are 512.7 a 0 for the singlet state and 33.4 a 0 for the triplet state. In addition, the spin-change and elastic cross sections are also calculated, and the g-wave shape resonance is found in the total elastic cross sections.

Jicai Zhang, Zunlue Zhu, Yufang Liu +1 more

We investigate the elastic scattering properties of strontium atoms at ultracold temperatures. The scattering parameters, such as s-wave scattering lengths, effective ranges and p-wave scattering lengths, are calculated for all stable isotope combinations of Sr atoms by the quantal method and semiclassical method, respectively. Good agreements are obtained. The scattering parameters are very sensitive to small changes of the reduced mass. Due to the repulsive interisotope and intraisotope s-wave scattering length and large elastic cross sections, 84 Sr— 86 Sr mixture is a good candidate to realize Bose—Bose quantum degenerate atomic gases.

Kenneth W. Ford, JOHN ARCHIBALD WHEELER