Dispersive nonlinearities of QED vacuum in a periodic magnetic field

摘要

We investigate specific features of the dispersive vacuum polarization effects for the light propagation in magnetized vacuum which are induced due to spatial modulation of the magnetic field. The reciprocal lattice vectors associated with the periodic field are involved in the energy-momentum conservation for the photon interaction processes which allow elastic scattering of impinging photons by a strong magnetic field. The efficiency of the scattering is shown to be coherently enhanced due to interference of the scattered waves from the periodic structure.