Width of photon decay in magnetic field: elementary semiclassical derivation and sensitivity to Lorentz violation
arXiv:1301.5707 · doi:10.1103/PhysRevD.87.105015
Abstract
We present an elementary derivation of the width of photon decay in a weak magnetic field using the semiclassical method of worldline instantons. The calculation is generalized to a model of quantum electrodynamics with broken Lorentz symmetry. Implications for the search of deviations from Lorentz invariance in the cosmic ray experiments are discussed.
12 pages, 1 figure
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