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arXiv 1508.04083hep-phastro-ph.COhep-exhep-th
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轴子诱导的电子振荡电偶极矩

Axion Induced Oscillating Electric Dipole Moment of the Electron

Christopher T. Hill

备注：
18 pages, 1 figure, v5 is equivalent to the published document
发表信息：
Phys. Rev. D 93, 025007 (2016)
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摘要：

一个宇宙轴子，通过电磁异常，诱导一个振荡的电偶极子的电子的频率$m_a$和强度$\sim$（几）$\times 10^{-32}$ e-cm，两个数量级以上的核子，并在几个数量级的目前标准模型常数限制。我们通过宇宙轴子的相互作用，通过电磁异常，特别强调了轴子的去耦极限，$\partial_t a(t)\propto m_a \rightarrow 0$，给出了详细的研究这种现象。分析是微妙的，我们发现的一般形式的行动涉及一个本地的接触相互作用和非本地的贡献，类似于“横向电流”在量子电动力学，强制执行的去耦限制。我们仔细地推导了Pauli-Schroedinger非相对论形式和Georgi的重夸克形式中的有效作用量，该形式适用于“重电子”（$m_e>>m_a$）。我们计算的电偶极子辐射的自由电子，磁铁和电流，沉浸在宇宙轴子场发射，并讨论实验配置，可能会产生一个可检测的信号。

英文摘要：

A cosmic axion, via the electromagnetic anomaly, induces an oscillating electric dipole for the electron of frequency $m_a$ and strength $\sim$(few)$\times 10^{-32}$ e-cm, two orders of magnitude above the nucleon, and within a few orders of magnitude of the present standard model constant limit. We give a detailed study of this phenomenon via the interaction of the cosmic axion, through the electromagnetic anomaly, with particular emphasis on the decoupling limit of the axion, $\partial_t a(t)\propto m_a \rightarrow 0$. The analysis is subtle, and we find the general form of the action involves a local contact interaction and a nonlocal contribution, analogous to the "transverse current" in QED, that enforces the decoupling limit. We carefully derive the effective action in the Pauli-Schroedinger non-relativistic formalism, and in Georgi's heavy quark formalism adapted to the "heavy electron" ($m_e>>m_a$). We compute the electric dipole radiation emitted by free electrons, magnets and currents, immersed in the cosmic axion field, and discuss experimental configurations that may yield a detectable signal.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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