Feshbach resonances in an ultracold $^{7}$Li-$^{133}$Cs Bose-Bose mixture
W.-X. Li, Y.-D. Chen, Y.-T. Sun, S. Tung, Paul S. Julienne
TL;DR
This paper investigates interspecies Feshbach resonances in ultracold $^{7}$Li-$^{133}$Cs mixtures, identifying resonances, assigning their channels, and refining interaction potentials to aid future experiments.
Contribution
The study locates and characterizes multiple Feshbach resonances in $^{7}$Li-$^{133}$Cs mixtures, improving the understanding of their scattering properties.
Findings
Ten interspecies resonances identified
Six resonances assigned to s-wave channels
Refined ground-state potentials for LiCs
Abstract
We present a study of interspecies Feshbach resonances in ultracold Li-Cs Bose-Bose mixtures. We locate ten interspecies resonances in three different spin-state combinations. By comparing to coupled-channel calculations, we assign six of the resonances to -wave channels and the rest to -wave channels. We use the -wave resonances to refine the ground-state potentials of LiCs in the coupled-channel calculations and then obtain an accurate characterization of the scattering and bound-state properties of the mixtures. Our results will be useful for future experiments with ultracold Li-Cs mixtures.
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