Journal Article

Large N correlation functions N = 2 superconformal quivers

Rodriguez-Gomez, Diego, Pini, Alessandro, Russo, Jorge G.

2017

Overview

A bstract Using supersymmetric localization, we consider four-dimensional N = 2 superconformal quiver gauge theories obtained from ℤ n orbifolds of N = 4 Super Yang-Mills theory in the large N limit at weak coupling. In particular, we show that: 1) The partition function for arbitrary couplings can be constructed in terms of universal building blocks. 2) It can be computed in perturbation series, which converges uniformly for |λ I | < π 2 , where λ I are the ’t Hooft coupling of the gauge groups. 3) The perturbation series for two-point functions can be explicitly computed to arbitrary orders. There is no universal effective coupling by which one can express them in terms of correlators of the N = 4 theory. 4) One can define twisted and untwisted sector operators. At the perturbative orbifold point, when all the couplings are the same, the correlators of untwisted sector operators coincide with those of N = 4 Super Yang-Mills theory. In the twisted sector, we find remarkable cancellations of a certain number of planar loops, determined by the conformal dimension of the operator.

• Publisher: Springer Berlin Heidelberg,Springer Nature B.V,SpringerOpen
• Subject: AdS-CFT Correspondence / Classical and Quantum Gravitation / Computation / Correlation / Correlators / Couplings / Elementary Particles / High energy physics / Operators (mathematics) / Perturbation methods / Physics / Physics and Astronomy / Quantum Field Theories / Quantum Field Theory / Quantum Physics / Regular Article - Theoretical Physics / Relativity Theory / String Theory / Supersymmetric Gauge Theory / Supersymmetry / Yang-Mills theory