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

S. B. Weiss, M. Bhattacharya, N. P. Bigelow

We report the calculation of the interspecies scattering length for the sodium-rubidium (Na-Rb) system. We present improved hybrid potentials for the singlet $X^1{\Sigma }^{+}$ and triplet $…