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arxiv: hep-th/0212028 · v4 · submitted 2002-12-03 · ✦ hep-th · hep-ph

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Photon decay in a CPT-violating extension of quantum electrodynamics

C. Adam , F.R. Klinkhamer
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classification ✦ hep-th hep-ph
keywords decayphotonchern-simons-likecpt-violatingelectrodynamicsquantumtermaction
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We consider the process of photon decay in quantum electrodynamics with a CPT-violating Chern-Simons-like term added to the action. For a simplified model with only the quadratic Maxwell and Chern-Simons-like terms and the quartic Euler-Heisenberg term, we obtain a nonvanishing probability for the decay of a particular photon state into three others.

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    cond-mat.mes-hall 2026-04 unverdicted novelty 6.0

    Crystal point groups parametrize SME Lorentz-violating coefficients in electromagnetic media, turning birefringent and multiferroic crystals into analogs for high-energy symmetry violations.