Volume 74, Number 3, May 2006
|Page(s)||411 - 416|
|Section||The physics of elementary particles and fields|
|Published online||24 March 2006|
Sufficient condition for the UV finiteness of Feynman graphs
School of Physics, Peking University - Beijing 100871, PRC
Corresponding author: Chengjy@pku.edu.cn
Accepted: 2 March 2006
We introduce an integral expression of Euclidean-space propagators. The Euclidean-space propagators can be expressed as Fourier-Laplace transform of the free-field operator commutator. Based on the integral expression of Euclidean-space propagators, we find a sufficient condition for the ultraviolet (UV) finiteness of Feynman graphs calculated with various modified propagators.
PACS: 11.25.Db – Properties of perturbation theory
© EDP Sciences, 2006
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