Towards the QED beta function and renormalons at 1 / Nf2 and 1 / Nf3

Nicola Andrea Dondi, Gerald V. Dunne, Manuel Reichert, Francesco Sannino

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Abstrakt

We determine the 1/Nf2 and 1/Nf3 contributions to the QED beta function stemming from the closed set of nested diagrams. At the order of 1/Nf2, we discover a new logarithmic branch cut closer to the origin when compared to the 1/Nf results. The same singularity location appears at 1/Nf3, and these correspond to a UV renormalon singularity in the finite part of the photon two-point function.

OriginalsprogEngelsk
Artikelnummer035005
TidsskriftPhysical Review D
Vol/bind102
Antal sider15
ISSN2470-0010
DOI
StatusUdgivet - 2020

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