Master Formulae for N-photon tree level amplitudes in plane wave backgrounds

Patrick Copinger*, James P. Edwards, Anton Ilderton, Karthik Rajeev

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

The presence of strong electromagnetic fields adds huge complexity to QED Feynman diagrams, such that new methods are required to calculate higher-loop and higher-multiplicity scattering amplitudes. Here we use the worldline formalism to present `Master Formulae' for all tree level amplitudes of two massive particles and an arbitrary number of photons, in a plane wave background, in both scalar and spinor QED. The plane wave is treated without approximation throughout, meaning in particular that our formulae are valid in the strong-field regime of current theoretical and experimental interest. We check our results against literature expressions obtainable at low multiplicity via direct Feynman diagram calculations.
Original languageEnglish
JournalPhysical Review D
Publication statusAccepted/In press - 23 Jan 2024

Keywords / Materials (for Non-textual outputs)

  • hep-th
  • hep-ph


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