Vacuum birefringence produces a differential phase between orthogonally polarized
components of a weak electromagnetic probe in the presence of a strong electromagnetic …

An exact solution of the Dirac equation in the presence of an arbitrary electromagnetic plane
wave is found, which corresponds to a focused electron wave packet, with the focus of the …

The Dirac equation has resided among the greatest successes of modern physics since its
emergence as the first quantum mechanical theory fully compatible with special relativity …

Laser-driven free-electron lasers (LDFELs) replace magnetostatic undulators with the
electromagnetic fields of a laser pulse. Because the undulator period is half the wavelength …

Theoretical approaches to QED scattering in strong fields typically treat the field as a fixed
background with simple spacetime dependence, such as a plane wave. Two major …

The emission of a photon by an electron in an intense laser field is one of the most
fundamental processes in electrodynamics and underlies the many applications that utilize …

Laser pulses are capable of imparting MeV energies to electrons over a single laser
wavelength. Despite these impressive accelerating gradients, direct laser acceleration is …