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Three-loop photon spectral density in QED

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arxiv 2212.03502 v1 pith:FEYEQNIT submitted 2022-12-07 hep-ph

classification hep-ph
keywords densityspectralintegralsphotoncalculatedobtainedpolylogarithmsterms
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abstract

We calculate three-loop photon spectral density in QED with $N$ different species of electrons. The obtained results were expressed in terms of iterated integrals, which are either reduce to Goncharov's polylogarithms or can be written in terms of one-fold integrals of harmonic polylogarithms and complete elliptic integrals. In addition we provide threshold and high-energy asymptotics of the calculated spectral density. It is shown, that the use of the obtained spectral density correctly reproduces separately calculated moments of corresponding photon polarization operator.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Antiprotonic atoms with nonperturbative inclusion of vacuum polarization and finite nuclear mass

    physics.atom-ph 2025-09 conditional novelty 6.0 of 10

    Energy levels for l > 1 states of antiprotonic atoms are computed to order (Z alpha)^6 with nonperturbative vacuum polarization, giving the most accurate theoretical transition energies to date.

  2. Hydrogenic rotational levels with spin-0 or spin-1/2 constituent particles

    physics.atom-ph 2026-07 accept novelty 5.5 of 10

    NRQED with nonperturbative vacuum polarization supplies controlled, mass-exact energy levels for L>1 states of muonic, kaonic and antiprotonic atoms, with clear paths to two-order accuracy gains for nuclear-property e...

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