We report theoretical determination of the dipole polarizability of the neon atom, including its frequency dependence. Corrections for the relativistic, quantum electrodynamics, finite nuclear mass, and finite nuclear size effects are taken into account. We obtain the value ${\alpha }_0=2.66080\left(36\right)$ for the static polarizability, and ${\alpha }_2=2.850\left(7\right)$ and ${\alpha }_4=4.932\left(14\right)$ for the first two polarizability dispersion coefficients (Cauchy moments); all values are in atomic units (a.u.). In the case of static polarizability, our result agrees with the best experimental determination, Gaiser et al. [Phys. Rev. Lett. 120, 123203 (2018)], but our estimated uncertainty is significantly larger. For the dispersion coefficients, the results obtained in this work appear to be the most accurate to date overall compared to published theoretical and experimental data. We also calculated the static magnetic susceptibility of the neon atom, needed to obtain the refractive index of gaseous neon. Our result, ${\chi }_0=-8.484\left(19\right)\times {10}^{-5}$ a.u., is about 9% larger in absolute value than the recommended experimental value, Rumble et al. [CRC Handbook of Chemistry and Physics (CRC Press, Boca Raton, FL, 2019)].

中文翻译：

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氖的极化率和磁化率的理论测定

我们报告了氖原子的偶极可极化性的理论测定，包括其频率依赖性。校正了相对论，量子电动力学，有限核质量和有限核尺寸效应。我们获得价值${\alpha }_0=2.66080（36）$ 静态极化率，以及 ${\alpha }_2=2.850（7）$ 和 ${\alpha }_4=4.932（14）$对于前两个极化率色散系数（Cauchy矩）；所有值均以原子单位（au）为单位。在静态极化率的情况下，我们的结果与最佳实验确定相符，Gaiser等。[物理 牧师 120，123203（2018）]，但我们的估计不确定性较大显著。对于色散系数，与已发表的理论和实验数据相比，这项工作获得的结果似乎是迄今为止最准确的。我们还计算了获得气态氖的折射率所需的氖原子的静磁化率。我们的结果${\chi }_0=-8.484（19）\times {10}^{-5}$au，绝对值比建议的实验值大大约9％，Rumble等。[ CRC化学和物理手册（CRC Press，Boca Raton，FL，2019）]。