The beta function in supersymmetric gauge theories. Instantons versus traditional approach

V. A. Novikov; M. A. Shifman; A. I. Vainshtein; V. I. Zakharov

doi:10.1016/0370-2693(86)90810-5

The beta function in supersymmetric gauge theories. Instantons versus traditional approach

V. A. Novikov, M. A. Shifman, A. I. Vainshtein, V. I. Zakharov

Physics and Astronomy (Twin Cities)

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292 Scopus citations

Abstract

Within the background field formalism we discuss vacuum loops in supersymmetric gauge theories. A direct connection is revealed between the absence (or presence) of high-order contributions and infrared regularization. A simple explanation is given why the instanton amplitude is exhausted by one loop whilst in the standard supergraph technique the effective action contains terms of all orders in the coupling constant. We present an exact relation between the Gell-Mann-Low function and the anomalous dimensions of matter superfields stemming from instanton calculus.

Original language	English (US)
Pages (from-to)	329-333
Number of pages	5
Journal	Physics Letters B
Volume	166
Issue number	3
DOIs	https://doi.org/10.1016/0370-2693(86)90810-5
State	Published - Jan 16 1986

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The beta function in supersymmetric gauge theories. Instantons versus traditional approach

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