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<p>We consider the effects of a local axion dark matter background on <i>g</i> − 2 of the electron. We calculate loop corrections to the photon-electron vertex and determine analytical formulas for the spin and cyclotron frequencies when the electron is in an external magnetic field. By comparing with current measurements of these observables, we are able to place the strongest constraint on the axion-elecron coupling for axion masses below 3 × 10<sup><i>−</i>18</sup>eV.</p>

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Electron g − 2 corrections from axion dark matter

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年8月1日

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  • Ariel Arza,
  • Jason L. Evans

摘要

We consider the effects of a local axion dark matter background on g − 2 of the electron. We calculate loop corrections to the photon-electron vertex and determine analytical formulas for the spin and cyclotron frequencies when the electron is in an external magnetic field. By comparing with current measurements of these observables, we are able to place the strongest constraint on the axion-elecron coupling for axion masses below 3 × 10−18eV.