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

Abstract The Gamma Factory (GF) is an ambitious proposal, currently explored within the
CERN Physics Beyond Colliders program, for a source of photons with energies up to≈ 400 …

Vacuum birefringence is governed by the amplitude for a photon to flip helicity or
polarization state in an external field. Here, we calculate the flip and nonflip amplitudes in …

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 …

Strong-field quantum electrodynamics (SF-QED) plays a crucial role in ultraintense laser–
matter interactions and demands sophisticated techniques to understand the related physics …

Higher-order tree-level processes in strong laser fields, ie, cascades, are in general
extremely difficult to calculate, but in some regimes the dominant contribution comes from a …

Probing vacuum structures deformed by high intense fields is of great interest in general. In
the context of quantum electrodynamics (QED), the vacuum exposed by a linearly polarized …

Vacuum polarization (VP) is investigated for the interaction of a polarized γ-ray beam of GeV
photons with a counterpropagating ultraintense laser pulse. In a conventional setup of a …

In this paper we make a theoretical investigation of a new type of high-energy nonlinear
Compton scattering phenomenon. In particular we show how, under certain conditions …

Stochastic effects in the spin (de) polarization of an ultrarelativistic electron beam during
photon emissions in a counterpropagating ultrastrong focused laser pulse in the quantum …