# Vacuum high-harmonic generation and electromagnetic shock

@article{Bhl2016VacuumHG, title={Vacuum high-harmonic generation and electromagnetic shock}, author={P. B{\"o}hl and B. King and H. Ruhl}, journal={Journal of Plasma Physics}, year={2016}, volume={82} }

When one takes into account the presence of virtual charged states in the quantum vacuum, a nonlinear self-interaction can arise in the propagation of electromagnetic fields. This self-interaction is often referred to as ‘real photon–photon scattering’. When the centre-of-mass energy of colliding photons is much lower than the rest energy of an electron–positron pair, this quantum effect can be included in the classical field equations of motion as a vacuum current and charge density using the… Expand

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