On the effective action of the vacuum photon splitting in Lorentz-violating QED
arXiv:1101.5390 · doi:10.1209/0295-5075/95/51001
Abstract
We consider one-loop radiative corrections from Lorentz- and CPT- violating extended QED to address the specific problem of finding explicitly an effective action describing amplitude of photon triple splitting. We show that it is not possible to find a nonzero photon triple splitting effective action, at least by using the derivative expansion method (at zero external momenta), up to leading order in the Lorentz- and CPT- violating parameter.
4 pages, version to appear in EPL