Statut | Confirmé |
Série | IPHT-MAT |
Domaines | hep-th |
Date | Mercredi 10 Avril 2024 |
Heure | 14:15 |
Institut | IPHT |
Salle | Salle Claude Itzykson, Bât. 774 |
Nom de l'orateur | Alessandro Testa |
Prenom de l'orateur | |
Addresse email de l'orateur | |
Institution de l'orateur | U. Parma |
Titre | Supersymmetric Wilson loops in non-conformal N=2 gauge theories and localization |
Résumé | Following our recent work (arxiv:2311.17692), we consider 1/2 BPS supersymmetric circular Wilson loops in four-dimensional N = 2 SU(N) supersymmetric Yang-Mills theories with massless matter in a generic representation of the gauge group and a non-vanishing β-function. On the four-sphere S^4, we can employ supersymmetric localization to map these observable into a matrix model, provided that the one-loop determinants are consistently regularized. After constructing the regularized matrix model for these set-ups, we will demonstrate that the predictions for the Wilson loop at order g^4 match standard perturbative renormalization, based on the evaluation of Feynman diagrams, both on the sphere and also in flat space, despite conformal symmetry being broken at the quantum level. Moreover, I will revisit the difference theory approach, showing that when β-function is non-vanishing this method does not account for the presence of evanescent terms which are activated by the renormalization procedure and contribute to the renormalized observable at order g^6. |
Numéro de preprint arXiv | |
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