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Calculation of many-loop diagrams of perturbation theory

✍ Scribed by N. I. Usyukina


Book ID
112459045
Publisher
SP MAIK Nauka/Interperiodica
Year
1983
Tongue
English
Weight
260 KB
Volume
54
Category
Article
ISSN
0040-5779

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Two-Loop Diagrams in Causal Perturbation
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Scalar two-loop diagrams are calculated analytically in massive cases needed for the computation of boson and fermion propagators in QED and QCD by the causal method of Epstein and Glaser. It is demonstrated that this method, which is the basis for the so-called dispersive methods, provides many adv