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The Effective Lagrangian of QED with a Magnetic Charge and Dyon Mass Bounds

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arxiv hep-ph/9702402 v1 pith:V5IFMY7S submitted 1997-02-23 hep-ph

classification hep-ph
keywords dyonlagrangianmasscorrespondingdipoledyonseffectiveelectric
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The effective Lagrangian of QED coupled to dyons is calculated. The resulting generalization of the Euler-Heisenberg Lagrangian contains non-linear P and T noninvariant terms corresponding to the virtual pair creation of dyons. The corresponding P and T violating part of the matrix element for light-by-light scattering is considered. This effect induces an electric dipole moment for the electron, of order M^{-2}, where M is the dyon mass. The current limit on the electric dipole moment of the electron yields the lower dyon mass bound M > 1 TeV.

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Cited by 2 Pith papers

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  1. The Black Hole Weak Gravity Conjecture with Multiple Charges

    hep-th 2019-08 conditional novelty 7.0 of 10

    For Einstein-Maxwell with N U(1) gauge fields, the one-loop logarithmic running of four-derivative Wilson coefficients forces the extremality form to become positive at large charge, so large extremal black holes can ...

  2. The Euler-Heisenberg action for a $U(1)\times U(1)$ dyon quantum electrodynamics

    hep-th 2026-07 accept novelty 6.5 of 10

    One-loop Euler-Heisenberg Lagrangian for U(1)×U(1) dyon QED produces hybrid refractive indices and vacuum birefringence that reduce exactly to ordinary QED when magnetic charge vanishes.

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