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Paper detail

Tadpole Summation by Dyson-Schwinger Equations

In quantum field theory with three-point and four-point couplings the Feynman diagrams of perturbation theory contain momentum independent subdiagrams, the ``tadpoles'' and ``snails''. With the help of Dyson-Schwinger equations we show how these can be summed up completely by a suitable modification of the mass and coupling parameters. This reduces the number of diagrams significantly. The method is useful for the organisation of perturbative calculations in higher orders.

preprint1996arXivOpen access
Jens KuesterGernot Muenster
hep-th
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Jens KuesterGernot Muenster

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