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 …

The field of laser-matter interaction traditionally deals with the response of atoms, molecules,
and plasmas to an external light wave. However, the recent sustained technological …

High-harmonic generation (HHG) is an extreme nonlinear process in which intense pulses
of light drive matter to emit high harmonics of the driving frequency, reaching the extreme …

Laser-wakefield accelerators (LWFAs) were proposed more than three decades ago, and
while they promise to deliver compact, high energy particle accelerators, they will also …

In simulations of a 10 PW laser striking a solid, we demonstrate the possibility of producing a
pure electron-positron plasma by the same processes as those thought to operate in high …

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 …

In the calculation of probabilities of physical processes occurring in a background classical
field, the local-constant-field approximation (LCFA) relies on the possibility of neglecting the …

The locally constant field approximation (LCFA) has to date underpinned the numerical
simulation of quantum processes in laser-plasma physics and astrophysics, but its validity …

The local-constant-field approximation (LCFA) is an essential theoretical tool for
investigating strong-field QED phenomena in background electromagnetic fields with …