Axion Induced Oscillating Electric Dipole Moments

Abstract

The axion electromagnetic anomaly induces an oscillating electric dipole for {\em any} static magnetic dipole. Static electric dipoles do not produce oscillating magnetic moments. This is a low energy theorem which is a consequence of the space-time dependent cosmic background field of the axion in the limit that it is only locally time dependent $(\overrightarrow{\beta }=0)$. The electron will acquire an oscillating electric dipole of frequency $m_a$ and strength $\sim 10^{-32}$ e-cm, three orders of magnitude above the nucleon, and within four orders of magnitude of the present standard model DC limit. This may suggest sensitive new experimental venues for the axion dark matter search.

arXiv comment4 pages, one figure

References in corpus (4)

• Order of Magnitude Smaller Limit on the Electric Dipole Moment of the Electron
• New Observables for Direct Detection of Axion Dark Matter
• Cosmic Axion Spin Precession Experiment (CASPEr)
• Axion Dark Matter Detection with Cold Molecules

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• Renormalization Group for Non-minimal ${\varphi }^{2}R$ Couplings and Gravitational Contact Interactions
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• Search for an axion-induced oscillating electric dipole moment for electrons using atomic magnetometers
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• Axion induced spin effective couplings
• Comment on "Axion induced oscillating electric dipole moments"
• Axion Bounds from Quantum Technology
• Reply to "Comment on `Axion induced oscillating electric dipole moments' " [1]
• A few thoughts on $\theta$ and the electric dipole moments
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• Searches for Exotic Transient Signals with a Global Network of Optical Magnetometers for Exotic Physics