论文标题
fock-空间相对论耦合群集计算超精素诱导的$ \ bf {^1s_0 \ rightarrow {^3p^o_0}} $ clock trancition in al $^+$
Fock-space relativistic coupled-cluster calculation of hyperfine induced $\bf {^1S_0 \rightarrow {^3P^o_0}}$ clock transition in Al$^+$
论文作者
论文摘要
我们已经开发了一种全粒子空间相对论耦合群集方法来计算两价原子和离子的性质。使用该方法，我们计算了与超精美相关的属性，$^1s_0-^3p^o_0 $时钟过渡中的al $^+$。我们的结果$^3p^o_0 $亚稳态的状态寿命，$ 20.20 \ pm 0.91 $ s，与实验价值非常一致，$ 20.60 \ pm 1.4 $ s [phys。莱特牧师。 {\ bf 98}，220801（2007）]。我们的研究表明，来自三重激发的贡献以及BREIT相互作用和QED效果的校正对于获得Al $^+$中的准确时钟属性至关重要。
We have developed an all-particle Fock-space relativistic coupled-cluster method to calculate the properties of two-valence atoms and ions. Using the method we compute the properties associated with hyperfine induced $^1S_0 - ^3P^o_0$ clock transition in Al$^+$. Our result of the $^3P^o_0$ metastable state life time, $20.20 \pm 0.91$ s, is in excellent agreement with the experimental value, $20.60 \pm 1.4$ s [Phys. Rev. Lett. {\bf 98}, 220801 (2007)]. Our studies show that the contributions from the triple excitations, and the corrections from the Breit interaction and QED effects are essential to obtain accurate clock properties in Al$^+$.
