This paper clarifies the disagreement in the depth of the potential energy curve of the cesium dimer singlet ground state which has lasted for nearly a decade. We point out that the origin of this disagreement must be a technical misprint in the values of the three binding energies reported by Danzl et al. [Science 321, 1062 (2008)], while the $X^1{\mathrm{\Sigma }}_g^{+}$ state potential reported by Coxon and Hajigeorgiou [J. Chem. Phys. 132, 094105 (2010)], based on experimental data by Amiot and Dulieu [J. Chem. Phys. 117, 5155 (2002)], is quite correct. We have recalculated the potential energy function of the triplet ground state $a^3{\mathrm{\Sigma }}_u^{+}$ by using the available experimental data spanning both the attractive and the repulsive branches so that the potential energy function complies asymptotically with the singlet ground state $X^1{\mathrm{\Sigma }}_g^{+}$ potential energy function by Coxon and Hajigeorgiou. This is important for the simulation of the near dissociation properties such as Feshbach resonances, which are typically observed in modern experiments with ultracold atoms and molecules.

中文翻译：

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重新检查Cs ₂地面单重态$X^{\mathrm{1个}}{\mathrm{\Sigma }}_G^{+}$ 和三胞胎 ${\mathrm{一个}}^3{\mathrm{\Sigma }}_{ü}^{+}$ 状态

本文澄清了持续近十年的铯二聚体单重态基态的势能曲线在深度上的分歧。我们指出，这种分歧的根源必须是Danzl等人报道的三种结合能的数值的技术错误。[科学321，1062（2008）]，而$X^{\mathrm{1个}}{\mathrm{\Sigma }}_G^{+}$Coxon和Hajigeorgiou报告的国家潜力[J．化学 物理 132，094105（2010）]，基于由阿米奥特和Dulieu [J.实验数据 化学 物理 117，5155（2002）]，是完全正确的。我们重新计算了三重态基态的势能函数${\mathrm{一个}}^3{\mathrm{\Sigma }}_{ü}^{+}$ 通过使用跨越吸引分支和排斥分支的可用实验数据，使势能函数渐近符合单线态基态 $X^{\mathrm{1个}}{\mathrm{\Sigma }}_G^{+}$Coxon和Hajigeorgiou的势能函数。这对于模拟诸如Feshbach共振的近解离性质非常重要，这在现代实验中通常是用超冷原子和分子观察到的。