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Tadpole summation by Dyson-Schwinger equations

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Zeitschrift für Physik C Particles and Fields

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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Authors and Affiliations

  1. Institut für Theoretische Physik I, Universität Münster, Wilhelm-Klemm-Strasse 9, D-48149, Münster, Germany

    Jens Küster & Gernot Münster

Authors
  1. Jens Küster
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  2. Gernot Münster
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Correspondence to Jens Küster.

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Küster, J., Münster, G. Tadpole summation by Dyson-Schwinger equations. Z Phys C - Particles and Fields 73, 551–555 (1997). https://doi.org/10.1007/s002880050346

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  • DOI: https://doi.org/10.1007/s002880050346

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