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arXiv · hep-th/9603145

Tadpole Summation by Dyson-Schwinger Equations

Jens Kuester·Gernot Muenster
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Abstract

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.

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Jens Kuester, Gernot Muenster. 1996-03-18. Tadpole Summation by Dyson-Schwinger Equations. https://doi.org/10.1007/s002880050346

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