When was reading about renormalization I did no understand the main Idea of the last :((adsbygoogle = window.adsbygoogle || []).push({});

It has been considered photon propagator with virtual pair of electron/pozitron. Takeing that loop integral the M^2 cuttoff is introduced, which tends then to ininifity, M^2 is "sopped up" in renormalized coupling constant, but even then when M^2 tends to infinity the coupling constant runs to infinity? Yes? Am I clear?

Pls help

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# Reading about renormalization

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