arXiv subjects

P. Böhl

Publications and source records attributed to P. Böhl.

2 recordsLinked to original sources

arXiv2015

Vacuum high harmonic generation in the shock regime

Electrodynamics becomes nonlinear and permits the self-interaction of fields when the quantised nature of vacuum states is taken into account. The effect on a plane probe pulse propagating through a stronger constant crossed background is calculated using numerical simulation and by analytically solving the corresponding wave equation. The electromagnetic shock resulting from vacuum high harmonic generation is investigated and a nonlinear shock parameter identified.

physics.plasm-ph↗

arXiv2015

Interaction of photons traversing a slowly varying electromagnetic background

When two electromagnetic fields counterpropagate, they are modified due to mutual interaction via the polarised virtual electron-positron states of the vacuum. By studying how photon-photon scattering effects such as birefringence and four-wave mixing evolve as the fields pass through one another, we find a significant increase during overlap. The results have particular relevance for calculations based on a constant field background.

hep-ph↗