Scattering properties of the ultracold 133Cs2 triplet state

The elastic scattering properties of ultracold ^{133}Cs₂ triplet state are investigated in detail. We construct a potential curve of the ¹³³Cs₂ triplet state, based on the latest ab initio molecular potential data and show how the scattering parameters are obtained by using three methods: the Numerov method, the semiclassical method and the variable phase method, where the scattering lengths of the ¹³³Cs₂ triplet state, i.e. 301.79a₀, 300.67a₀ and 310.81a₀ are obtained respectively, with a₀ being the Bohr radius. We also calculate the effective range and the number of bound states for the ¹³³Cs₂ triplet state. Our results are in agreement with the recent experimental data and the theoretical calculations. This confirms that the results of the scattering properties of the ultracold ^{133}Cs₂ triplet state, calculated by using these three methods, are reliable.