414 citations · 4.1k across the 96 of their papers we have counts for
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Using nonlinear Breit-Wheeler to test nonlinear vacuum birefringence
O. Borysov, B. Heinemann, A. Ilderton +2
Quantum electrodynamics predicts that the quantum vacuum is birefringent, but due to the very small cross-section this is yet to be confirmed by experiment. Vacuum birefringence ar…
Advances in QED with intense background fields
A. Fedotov, A. Ilderton, F. Karbstein +4
Upcoming and planned experiments combining increasingly intense lasers and energetic particle beams will access new regimes of nonlinear, relativistic, quantum effects. This improv…
Particle-beam scattering from strong-field QED
Tim Adamo, Anton Ilderton, Alexander J. MacLeod
We consider the scattering of probe particles on an ultra-boosted beam of charge, in the case that the fields of the beam are strong and must be treated non-perturbatively. We show…
The physics of adiabatic particle number in the Schwinger effect
Anton Ilderton
The production of electron-positron pairs from light is a famous prediction of quantum electrodynamics. Yet it is often emphasised that the number of produced pairs has no physical…
Reduction of order, resummation and radiation reaction
Robin Ekman, Tom Heinzl, Anton Ilderton
The Landau-Lifshitz equation is the first in an infinite series of approximations to the Lorentz-Abraham-Dirac equation obtained from `reduction of order'. We show that this series…
Exact solutions in radiation reaction and the radiation-free direction
Robin Ekman, Tom Heinzl, Anton Ilderton
We present new exact solutions of the Landau-Lifshitz and higher-order Landau-Lifshitz equations describing particle motion, with radiation reaction, in intense electromagnetic fie…
Classical resummation and breakdown of strong-field QED
T. Heinzl, A. Ilderton, B. King
QED perturbation theory has been conjectured to break down in sufficiently strong backgrounds, obstructing the analysis of strong-field physics. We show that the breakdown occurs e…
High-intensity scaling in UV-modified QED
Robin Ekman, Tom Heinzl, Anton Ilderton
QED perturbation theory in a background field has been conjectured to break down for sufficiently high field intensity. The high-intensity behavior of a field theory is however int…
Resummation of background-collinear corrections in strong field QED
James P. Edwards, Anton Ilderton
Scattering processes in laser backgrounds are degenerate to the emission of unobservable photons collinear with the laser. We identify processes and observables for which such dege…
Loop spin effects in intense background fields
Anton Ilderton, Ben King, Suo Tang
Radiative and non-radiative electron spin flip probabilities are analysed in both plane wave and focussed laser backgrounds. We provide a simple and physically transparent descript…
Back-reaction in strong field QED: a toy model
Robin Ekman, Anton Ilderton
As a toy model for QED in strong background fields, we consider the impact of back-reaction and loop effects on scattering processes in quantum optics. We show that neglecting back…
Exact results for scattering on ultra-short plane wave backgrounds
Anton Ilderton
We give exact results for the emission spectra of both nonlinear Breit-Wheeler pair production and nonlinear Compton scattering in ultra-intense, ultra-short duration plane wave ba…
Absorption cross section in an intense plane wave background
Anton Ilderton, Ben King, Alexander John Macleod
We consider the absorption of probe photons by electrons in the presence of an intense, pulsed, background field. Our analysis reveals an interplay between regularisation and gauge…
Note on the conjectured breakdown of QED perturbation theory in strong fields
A. Ilderton
Strong background fields require a non-perturbative treatment, which is afforded in QED by the Furry expansion of scattering amplitudes. It has been conjectured that this expansion…
Exact classical and quantum dynamics in background electromagnetic fields
Tom Heinzl, Anton Ilderton
Analytic results for (Q)ED processes in external fields are limited to a few special cases, such as plane waves. However, the strong focussing of intense laser fields implies a nee…
Quantum radiation reaction: from interference to incoherence
Victor Dinu, Chris Harvey, Anton Ilderton +2
We investigate quantum radiation reaction in laser-electron interactions across different energy and intensity regimes. Using a fully quantum approach which also accounts exactly f…
Prospects for studying vacuum polarisation using dipole and synchrotron radiation
Anton Ilderton, Mattias Marklund
The measurement of vacuum polarisation effects, in particular vacuum birefringence, using combined optical and x-ray laser pulses is now actively pursued. Here we briefly examine t…
Photon polarisation in light-by-light scattering: finite size effects
Victor Dinu, Tom Heinzl, Anton Ilderton +2
We derive a simple expression for the photon helicity and polarisation-flip probabilities in arbitrary background fields, in the low energy regime. Taking the background to model a…
Vacuum refractive indices and helicity flip in strong-field QED
Victor Dinu, Tom Heinzl, Anton Ilderton +2
Vacuum birefringence is governed by the amplitude for a photon to flip helicity or polarisation state in an external field. Here we calculate the flip and non-flip amplitudes in ar…
Light-Front Quantum Chromodynamics: A framework for the analysis of hadron physics
B. L. G. Bakker, A. Bassetto, S. J. Brodsky +17
An outstanding goal of physics is to find solutions that describe hadrons in the theory of strong interactions, Quantum Chromodynamics (QCD). For this goal, the light-front Hamilto…
Corrections to Laser Electron Thomson Scattering
Thomas Heinzl, Anton Ilderton
We discuss classical and quantum corrections to Thomson scattering between an electron and a laser. For radiation reaction, nonlinear, and quantum effects we identify characteristi…
Infra-red divergences in plane wave backgrounds
Victor Dinu, Thomas Heinzl, Anton Ilderton
We show that the emission of soft photons via nonlinear Compton scattering in a pulsed plane wave (laser field) is in general infra-red divergent. We give examples of both soft and…
The intensity dependent mass shift: existence, universality and detection
Chris Harvey, Thomas Heinzl, Anton Ilderton +1
The electron mass shift in a laser field has long remained an elusive concept. We show that the mass shift can exist in pulses but that it is neither unique nor universal: it can b…
Pair production: the view from the lightfront
Florian Hebenstreit, Anton Ilderton, Mattias Marklund
We give an exact, analytic, and manifestly gauge invariant account of pair production in combined longitudinal and transverse electromagnetic fields, both depending arbitrarily on…