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- W2043670151 abstract "Motivated by a recent experiment by the Ecole Normale Sup'erieure de Lyon (ENS) group on the mixture of Bose and Fermi superfluids [I. Ferrier-Barbut et al., Science 345, 1035 (2014)], we investigate the effective scattering between a bosonic atom and a molecule (dimer) of fermion atoms. It is found that the mean-field prediction of the atom-dimer scattering length $({a}_{mathrm{ad}})$, as simply given by the boson-fermion scattering length $({a}_{mathrm{bf}})$, generically fails. Instead, ${a}_{mathrm{ad}}$ crucially depends on the ratio between ${a}_{mathrm{bf}}$ and ${a}_{mathrm{ff}}$ (the fermion-fermion scattering length), and in addition it log-periodically depends on the three-body parameter. We identify the universal parameters in characterizing ${a}_{mathrm{ad}}$ for a wide range of ${a}_{mathrm{ff}}$ in the molecular side of the fermion-fermion Feshbach resonance, and further demonstrate that the atom-dimer many-body system can become unstable against either phase separation or collapse as tuning ${a}_{mathrm{ff}}$. Our results have some implications for the ENS experiment." @default.
- W2043670151 created "2016-06-24" @default.
- W2043670151 creator A5077995699 @default.
- W2043670151 date "2014-10-21" @default.
- W2043670151 modified "2023-10-14" @default.
- W2043670151 title "Atom-dimer scattering and stability of Bose and Fermi mixtures" @default.
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- W2043670151 doi "https://doi.org/10.1103/physreva.90.041603" @default.
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