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

The dynamics of charged particles in electromagnetic fields is an essential component of
understanding the most extreme environments in our Universe. In electromagnetic fields of …

We review common extensions of particle-in-cell (PIC) schemes which account for strong
field phenomena in laser-plasma interactions. After describing the physical processes of …

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 …

Since the invention of chirped pulse amplification, which was recognized by a Nobel Prize in
physics in 2018, there has been a continuing increase in available laser intensity. Combined …

It is possible using current high-intensity laser facilities to reach the quantum radiation
reaction regime for energetic electrons. An experiment using a wakefield accelerator to drive …

We derive an approximation to QED effects in intense laser fields which can be employed in
laser-particle collisions. Treating the laser as a plane wave of arbitrary intensity, we split the …

In a previous paper we showed how higher-order strong-field-QED processes in long laser
pulses can be approximated by multiplying sequences of'strong-field Mueller matrices'. We …

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 test current numerical implementations of laser-matter interactions by comparison with
exact analytical results. Focusing on photon emission processes, it is found that the …