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  • Open Access

Theory uncertainties in predictions of strong-field QED

T. G. Blackburn*

  • *Contact author: tom.blackburn@physics.gu.se
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Phys. Rev. Research 8, 023346 – Published 26 June, 2026

DOI: https://doi.org/10.1103/mtfw-zmpt

Abstract

Experiments using high-power lasers and relativistic electron beams will soon be capable of precision testing of the theory of strong-field quantum electrodynamics. The comparison between experiment and theory always occurs via numerical simulations, but the lack of quantitative uncertainty bounds for the latter means that the origin of any discrepancies cannot be identified conclusively. Here, I present a simulation framework that can place meaningful bounds on the theory uncertainties inherent to its operation. This work shows that the use of the locally constant field approximation leads to a theory uncertainty of a few percent in the signals of quantum radiation reaction expected in near-term experiments.

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Phys. Rev. Research 8, 023346– Published 26 June, 2026
  • Received 11 August 2025
  • Accepted 11 June 2026
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by Bibsam.

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