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Dimensional renormalization: Ladders and rainbows

journal contribution
posted on 2023-05-16, 10:27 authored by Robert DelbourgoRobert Delbourgo, Kalloniatis, AC, G Thompson
Renormalization factors are most easily extracted by going to the massless limit of the quantum field theory and retaining only a single momentum scale. We derive the factors and renormalized Green's functions to all orders in perturbation theory for rainbow graphs and vertex (or scattering) diagrams at zero momentum transfer, in the context of dimensional regularization, and we prove that the correct anomalous dimensions for those processes emerge in the limit D→4.

History

Publication title

Physical Review D

Volume

54

Issue

8

Pagination

5373-5376

ISSN

0556-2821

Department/School

School of Natural Sciences

Publisher

The American Physical Society

Place of publication

Woodbury, New York, USA

Repository Status

  • Restricted

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