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arXiv · 1808.03917

Broad Feshbach resonances in ultracold alkali-metal systems

Yue Cui·Min Deng·Li You·Bo Gao·Meng Khoon Tey
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Abstract

A comprehensive search for "broad" Feshbach resonances (FRs) in all possible combinations of stable alkali-metal atoms is carried out, using a multi-channel quantum-defect theory assisted by the analytic wave functions for a long-range van-der-Waals potential. A number of new "broad" $s$-, $p$- and $d$-wave FRs in the lowest-energy scattering channels, which are stable against two-body dipolar spin-flip loss, are predicted and characterized. Our results also show that "broad" FRs of $p$- or $d$-wave type that are free of two-body loss do not exist between fermionic alkali-metal atoms for magnetic field up to 1000\,G. These findings constitute helpful guidance on efforts towards experimental study of high-partial-wave coupling induced many-body physics.

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Yue Cui, Min Deng, Li You, Bo Gao, Meng Khoon Tey. 2018-08-12. Broad Feshbach resonances in ultracold alkali-metal systems. https://doi.org/10.1103/physreva.98.042708

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