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arXiv physics/0108033physics.atom-ph
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Breit相互作用的关联多体处理及其对铯原子性质和宇称破坏的应用

Correlated many-body treatment of Breit interaction with application to cesium atomic properties and parity violation

Andrei Derevianko

摘要:

在三阶相对论多体微扰理论的框架下,确定了Breit相互作用对~(133)Cs原子基本性质的修正。能量,超精细结构常数,非对角超精细6S-7S振幅,和电偶极子矩阵元素的修正表。结果表明,在Dirac-Hartree-Fock水平上,Breit对相关性的修正与Breit修正是相当的.由于Breit相互作用的宇称非守恒(PNC)的6S-7S振幅的修改也进行了评估,由此产生的弱电荷的$^{133}$ Cs显示没有显着偏离的预测标准模型的基本粒子。根据对最近反质子原子实验的分析,我们估计PNC振幅的中子皮修正为-0.2%,误差为30%。本文工作是对文献[A. Derevianko,Phys. Rev. Lett. 85,1618(2000)]的形式主义的讨论,并提供了额外的数值结果和更新的讨论宇称违反。

英文摘要:

Corrections from Breit interaction to basic properties of atomic 133Cs are determined in the framework of third-order relativistic many-body perturbation theory. The corrections to energies, hyperfine-structure constants, off-diagonal hyperfine 6S-7S amplitude, and electric-dipole matrix elements are tabulated. It is demonstrated that the Breit corrections to correlations are comparable to the Breit corrections at the Dirac-Hartree-Fock level. Modification of the parity-nonconserving (PNC) 6S-7S amplitude due to Breit interaction is also evaluated; the resulting weak charge of $^{133}$Cs shows no significant deviation from the prediction of the standard model of elementary particles. The neutron skin correction to the PNC amplitude is also estimated to be -0.2% with an error bound of 30% based on the analysis of recent experiments with antiprotonic atoms. The present work supplements publication [A. Derevianko, Phys. Rev. Lett. 85, 1618 (2000)] with a discussion of the formalism and provides additional numerical results and updated discussion of parity violation.

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