Reply to “Comment on ‘Axion induced oscillating electric dipole moments’”

Journal Article · Tue Mar 28 00:00:00 EDT 2017 · Physical Review D

DOI:https://doi.org/10.1103/PhysRevD.95.058702· OSTI ID:1226347

Hill, Christopher T. ^[1]

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1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Here, we respond to a paper of Flambaum et al., claiming there is no effective induced oscillating electric dipole moment, e.g., for the electron, arising from interaction with an oscillating cosmic axion background via the anomaly. The relevant Feynman amplitude, Fig. 1, as computed by Flambaum et al., becomes a total divergence, and vanishes. Contrary to this result, we obtained a nonvanishing amplitude that yields physical electric dipole radiation for an electron (or any magnetic dipole moment) immersed in a cosmic axion field. We argue that Flambaum et al.’s counterclaim is incorrect, and is based upon a misunderstanding of a physics choice vs gauge choice, and an assumption that electric dipoles be defined only by coupling to static (constant in time) electric fields.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• Grant/Contract Number: AC02-07CH11359
• OSTI ID: 1226347
• Alternate ID(s): OSTI ID: 1349396
• Report Number(s): FERMILAB-PUB-15-438-T; arXiv:1510.05643; PRVDAQ; 1399045
• Journal Information: Physical Review D, Vol. 95, Issue 5; ISSN 2470-0010
• Publisher: American Physical Society (APS)
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS