铯原子基态电张量极化率的实验和理论校正
Reconciliation of experimental and theoretical electric tensor polarizabilities of the cesium ground state
摘要：
我们提出了一个新的理论分析的强烈抑制的F-和M-相关的斯塔克位移的Cs基态超精细结构。我们的治疗使用三阶微扰理论，包括非对角超精细的相互作用没有考虑在早期的治疗。数值计算的扰动和使用束缚态n=200产量基态张量极化率与实验值吻合良好，从而弥合了40岁的实验和理论之间的差距。我们进一步发现两个基态超精细流形的张量极化率符号相反，与先前的推导结果不一致。这个符号误差直接影响到一次频率标准中黑体辐射漂移的精确评估。
英文摘要：
We present a new theoretical analysis of the strongly suppressed F- and M-dependent Stark shifts of the Cs ground state hyperfine structure. Our treatment uses third order perturbation theory including off-diagonal hyperfine interactions not considered in earlier treatments. A numerical evaluation of the perturbation sum using bound states up to n=200 yields ground state tensor polarizabilities which are in good agreement with experimental values, thereby bridging the 40-year-old gap between experiments and theory. We have further found that the tensor polarizabilities of the two ground state hyperfine manifolds have opposite signs, in disagreement with an earlier derivation. This sign error has a direct implication for the precise evaluation of the blackbody radiation shift in primary frequency standards.
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