Differential Renormalization of Massive Quantum Field Theories

Details Differential Renormalization of Massive Quantum Field Theories Differential Renormalization of Massive Quantum Field Theories

1992-03-10

arxiv.org/abs/hep-ph/9203207v1

Phys.Lett. B283 (1992) 293-297

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages(LaTex, no figures)

Scientific paper

10.1016/0370-2693(92)90022-V

We extend the method of differential renormalization to massive quantum field theories treating in particular $\ph4$-theory and QED. As in the massless case, the method proves to be simple and powerful, and we are able to find, in particular, compact explicit coordinate space expressions for the finite parts of two notably complicated diagrams, namely, the 2-loop 2-point function in $\ph4$ and the 1-loop vertex in QED.

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