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

Charged particles accelerated by electromagnetic fields emit radiation, which must, by the
conservation of momentum, exert a recoil on the emitting particle. The force of this recoil …

Many works have shown that dense positrons can be effectively generated from laser-solid
interactions in the strong-field quantum electrodynamics (QED) regime. Whether these …

The new generation of laser facilities is expected to deliver short (10 fs–100 fs) laser pulses
with 10–100 PW of peak power. This opens an opportunity to study matter at extreme …

Relativistic positron beams are required for fundamental research in nonlinear strong field
QED, plasma physics, and laboratory astrophysics. Positrons are difficult to create and …

The forthcoming generation of multi-petawatt lasers opens the way to abundant pair
production by the nonlinear Breit–Wheeler process, ie the decay of a photon into an electron …

We study single, double and higher-order nonlinear Compton scattering where an electron
interacts nonlinearly with a high-intensity laser and emits one, two or more photons. We …

We study the trident process in inhomogeneous plane-wave background fields. We obtain
compact analytical expressions for all terms in the probability, including the exchange part …

The interaction of light with the quantum-vacuum is predicted to give rise to some of the most
fundamental and exotic processes in modern physics, which remain untested in the …

It is conjectured that all perturbative approaches to quantum electrodynamics (QED) break
down in the collision of a high-energy electron beam with an intense laser, when the laser …