Quantum electrodynamical cross-section formula from photon mass and dimensional regularization

Nicolas Papanicolaou, Daniel Zwanziger

    Research output: Contribution to journalArticle


    Exact cross section formulae for quantum electrodynamical processes are derived in terms of an infrared regulating measure, which explicitly segregates the real infrared divergence. It also yields a simple prescription for the removal of the virtual infrared divergence, which we discuss in the context of two different regularization schemes: the traditional photon-mass regularization and the recently developed dimensional regularization. Comparison with the coherent state formulation of quantum electrodynamics establishes the equivalence of the two approaches at the cross-section level.

    Original languageEnglish (US)
    Pages (from-to)77-94
    Number of pages18
    JournalNuclear Physics, Section B
    Issue number1
    StatePublished - Dec 22 1975


    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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