Upcoming and planned experiments combining increasingly intense lasers and energetic
particle beams will access new regimes of nonlinear, relativistic, quantum effects. This …

Abstract This Conceptual Design Report describes LUXE (Laser Und XFEL Experiment), an
experimental campaign that aims to combine the high-quality and high-energy electron …

A long-standing prediction of quantum electrodynamics, yet to be experimentally observed,
is the interaction between real photons in vacuum. As a consequence of this interaction, the …

Direct measurement of the elastic scattering of real photons on an electromagnetic field
would allow the fundamental low-energy constants of quantum electrodynamics to be …

Volkov states are exact solutions of the Dirac equation in the presence of an arbitrary plane
wave. Accounting for the interaction between the Dirac field and the electromagnetic field …

The elastic scattering of two real photons in vacuum is one of the most elusive of the
fundamentally new processes predicted by quantum electrodynamics. This explains why …

A workshop," Probing strong-field QED in electron--photon interactions", was held in DESY,
Hamburg in August 2018, gathering together experts from around the world in this area of …

Hypothetical oscillations of probe photons into axion-like particles might be revealed by
exploiting the strong fields of high-intensity laser pulses. Considering an arbitrary plane …

We derive production yields for massive pseudo-scalar and scalar axion-like-particles
(ALPs), through non-linear Compton scattering of an electron in the background of low-and …

A consistent renormalization of a quantum theory of axion-electrodynamics requires terms
beyond the minimal coupling of two photons to a neutral pseudoscalar field. This procedure …