Summary
A technique is presented for constructing Feynman graphs directly from superfields rather than from the constituent fields. Using as an example the theory of a scalar multiplet, we show how such a technique simplifies a discussion of the divergences for multiloop diagrams.
Riassunto
Si espone una tecnica per costruire grafici di Feynman direttamente a partire dai supercampi piuttosto che dai campi costituenti. Servendosi dell’esempio della teoria di un multipletto scalare, si fa vedere come una tale tecnica semplifichi la discussione delle divergenze per i diagrammi a molti cappi.
Реэюме
Предлагается техника для конструирования графиков Фейнмана непосредственно иэ суперполей, а не иэ составляюших полей. Испольэуя, как пример, теорию скалярного мультиплета, покаэывается, как такая техника упрошает рассмотрение расходимостей для многопетельных диаграмм.
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References
J. Wess andB. Zumino:Nucl. Phys.,70 B, 39 (1974).
J. Wess andB. Zumino:Phys. Lett.,49 B, 52 (1974).
A. Salam andJ. Strathdee:On superfields and Fermi-Bose symmetry, ICTP, Trieste, preprint IC/74/42. We refer the reader to this paper for an up-to-date list of references on superfields.
Since we are only interested in power counting, no particular regularizing scheme has been introduced; however, this can easily be done. See for instance ref. (4).
J. Iliopoulos andB. Zumino:Nucl. Phys.,76 B, 310 (1974).
W. Lang andJ. Wess:Investigation of a nonrenormalizable Lagrangian model invariant under supertransformations, University of Karlsruhe preprint (May 1974).
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Capper, D.M. Feynman graphs for superfields. Nuov Cim A 25, 259–272 (1975). https://doi.org/10.1007/BF02729046
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DOI: https://doi.org/10.1007/BF02729046