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arXiv 1206.3607physics.atom-phhep-ph
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混沌原子谱中T-奇、P-偶相互作用的研究

Proposed search for T-odd, P-even interactions in spectra of chaotic atoms

Muir J. Morrison, Andrei Derevianko

摘要:

原子中基本对称性的破坏是实验和理论研究的热点。P-奇,T-偶跃迁已被观察到,并在良好的协议与电弱理论。对永久电偶极矩的研究限制了T奇、P奇相互作用,限制了对基本粒子标准模型的扩展。在这里,我们提出了一个新的搜索T-odd,P-even(TOPE)的原子相互作用。我们考虑开壳层原子,如稀土原子,具有密集的,混沌激发光谱与强大的水平排斥。能级排斥的强度取决于原子哈密顿量的基本对称性。TOPE相互作用导致增强的能级排斥。我们演示了如何统计分析的许多混沌光谱可以确定的水平排斥的强度,特别是,在能量范围内的水平的数量的方差已被证明是一个有用的措施。我们估计,使用频率梳光谱,可以测量到足够数量的混沌水平,以匹配或超过目前的实验界限TOPE相互作用。

英文摘要:

Violation of fundamental symmetries in atoms is the subject of intense experimental and theoretical interest. P-odd, T-even transitions have been observed and are in excellent agreement with electroweak theory. Searches for permanent electric dipole moments have placed bounds on T-odd, P-odd interactions, constraining proposed extensions to the Standard Model of elementary particles. Here we propose a new search for T-odd, P-even (TOPE) interactions in atoms. We consider open-shell atoms, such as the rare-earth atoms, which have dense, chaotic excitation spectra with strong level repulsion. The strength of the level repulsion depends on the underlying symmetries of the atomic Hamiltonian. TOPE interactions lead to enhanced level repulsion. We demonstrate how a statistical analysis of many chaotic spectra can determine the strength of level repulsion; in particular, the variance of the number of levels in an energy range has been shown to be a useful measure. We estimate that, using frequency comb spectroscopy, a sufficient number of chaotic levels could be measured to match or exceed the current experimental bounds on TOPE interactions.

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