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Renormalization flow of QED

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arxiv hep-ph/0405183 v1 pith:Y7KNGHZ4 submitted 2004-05-19 hep-ph hep-th

Holger Gies , Joerg Jaeckel This is my paper · ORCID
classification hep-phhep-th
keywords couplingchisblandaupolerenormalizationscaletheoryaddition
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We investigate textbook QED in the framework of the exact renormalization group. In the strong-coupling region, we study the influence of fluctuation-induced photonic and fermionic self-interactions on the nonperturbative running of the gauge coupling. Our findings confirm the triviality hypothesis of complete charge screening if the ultraviolet cutoff is sent to infinity. Though the Landau pole does not belong to the physical coupling domain owing to spontaneous chiral symmetry breaking (chiSB), the theory predicts a scale of maximal UV extension of the same order as the Landau pole scale. In addition, we verify that the chiSB phase of the theory which is characterized by a light fermion and a Goldstone boson also has a trivial Yukawa coupling.

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Cited by 3 Pith papers

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

  1. Hard cutoff and gauge theories

    hep-th 2026-05 unverdicted novelty 6.0 of 10

    A hard-cutoff scheme for scalar and fermionic QED is constructed that preserves gauge invariance and reproduces the standard Euler-Heisenberg effective action up to cutoff-suppressed periodic corrections.

  2. Regulator and gauge dependence of the Abelian gauge coupling in asymptotically safe quantum gravity

    hep-th 2025-08 unverdicted novelty 6.0 of 10

    The existence of an asymptotically safe UV completion for the Abelian gauge coupling is shown to survive simultaneous variations of the regulator and gauge parameters in certain minimal-sensitivity regions.

  3. Induced CFJ Term in nonlocal Lorentz-Violating QED: Natural Regularization from Entire Dirac Operators

    hep-th 2026-07 conditional novelty 5.0 of 10

    In nonlocal Lorentz-violating QED with entire form factors of the Dirac operator, the induced CFJ coefficient is finite and equals the local value times a deformation function of m/Λ.

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