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- W3022271874 abstract "We derive an approximation to QED effects in strong background fields which can be employed to improve numerical simulations of laser-particle collisions. Treating the laser as a plane wave of arbitrary intensity, we split the wave into fast (carrier) and slow (envelope) modes. We solve the interaction dynamics exactly for the former while performing a local expansion in the latter. This yields a `locally monochromatic' approximation (LMA), which we compare with exact spectra for nonlinear Compton scattering and nonlinear Breit-Wheeler pair production, for realistic laser pulse durations. We show that, as an improvement over the commonly used `locally-constant field' approximation, the LMA exactly reproduces the correct low energy behaviour of particle spectra, as well as the position and amplitude of harmonic features." @default.
- W3022271874 created "2020-05-13" @default.
- W3022271874 creator A5015051661 @default.
- W3022271874 creator A5022340172 @default.
- W3022271874 creator A5083590428 @default.
- W3022271874 date "2020-12-11" @default.
- W3022271874 modified "2023-10-13" @default.
- W3022271874 title "Locally monochromatic approximation to QED in intense laser fields" @default.
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- W3022271874 doi "https://doi.org/10.1103/physreva.102.063110" @default.
- W3022271874 hasPublicationYear "2020" @default.
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- W3022271874 hasAuthorship W3022271874A5015051661 @default.