Vacuum Photon Splitting in Lorentz-Violating Quantum Electrodynamics
Alan Kostelecky, Austin Pickering
Abstract
Radiative corrections arising from Lorentz violation in the fermion sector induce a nonzero amplitude for vacuum photon splitting. At one loop, the on-shell amplitude acquires both CPT-even and CPT-odd contributions forbidden in conventional electrodynamics.
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