On the effective action of the vacuum photon splitting in Lorentz-violating QED
Departamento de Física, Universidade Federal de Campina Grande - Caixa Postal 10071, 58109-970 Campina Grande, Paraíba, Brazil
Accepted: 21 July 2011
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 the 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.
PACS: 11.30.Cp – Lorentz and Poincaré invariance
© EPLA, 2011