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Feshbach resonances in an ultracold $^{7}$Li-$^{133}$Cs Bose-Bose mixture

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arxiv 2205.08837 v2 pith:NPELWO5L submitted 2022-05-18 cond-mat.quant-gas physics.atom-ph

classification cond-mat.quant-gasphysics.atom-ph
keywords resonancesmixturesultracoldwavebose-bosecalculationschannelscoupled-channel
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abstract

We present a study of interspecies Feshbach resonances in ultracold $^{7}$Li-$^{133}$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 $s$-wave channels and the rest to $p$-wave channels. We use the $s$-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 $^{7}$Li-$^{133}$Cs mixtures.

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