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Calculation of the interspecies s-wave scattering length in an ultracold Na-Rb vapor

S. B. Weiss·M. Bhattacharya·N. P. Bigelow
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Abstract

We report the calculation of the interspecies scattering length for the sodium-rubidium (Na-Rb) system. We present improved hybrid potentials for the singlet $X^1Σ^+$ and triplet $a^3Σ^+$ ground states of the NaRb molecule, and calculate the singlet and triplet scattering lengths $a_{s}$ and $a_{t}$ for the isotopomers $^{23}$Na$^{87}$Rb and $^{23}$Na$^{85}$Rb. Using these values, we assess the prospects for producing a stable two-species Bose-Einstein condensate in the Na-Rb system.

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S. B. Weiss, M. Bhattacharya, N. P. Bigelow. 2003-12-03. Calculation of the interspecies s-wave scattering length in an ultracold Na-Rb vapor. https://doi.org/10.1103/physreva.68.042708

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