Ultraviolet divergences in non-renormalizable supersymmetric theories

Abstract : We present a pedagogical review of our current understanding of the ultraviolet structure of N = (1,1) 6D supersymmetric Yang-Mills theory and of N = 8 4D supergravity. These theories are not renormalizable, they involve power ultraviolet divergences and, in all probability, an infinite set of higher-dimensional counterterms that contribute to on-mass-shell scattering amplitudes. A specific feature of supersymmetric theories (especially, of extended supersymmetric theories) is that these counterterms may not be invariant off shell under the full set of supersymmetry transformations. The lowest-dimensional nontrivial counterterm is supersymmetric on shell. Still higher counterterms may lose even the on-shell invariance. On the other hand, the full effective Lagrangian, generating the amplitudes and representing an infinite sum of counterterms, still enjoys the complete symmetry of original theory. We also discuss simple supersymmetric quantum-mechanical models that exhibit the same behaviour.
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http://hal.in2p3.fr/in2p3-01317499
Contributeur : Sylvie Flores <>
Soumis le : mercredi 18 mai 2016 - 14:11:14
Dernière modification le : vendredi 22 juin 2018 - 09:33:43

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  • HAL Id : in2p3-01317499, version 1
  • ARXIV : 1603.06811

Citation

A. V. Smilga. Ultraviolet divergences in non-renormalizable supersymmetric theories. SUBATECH-TheorieHE. 26 pages, 3 figures. 2016. 〈in2p3-01317499〉

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