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Título: Large N correlation functions in N = 2 superconformal quivers
Autores: Rodríguez-Gómez, Diego
Pini, Alessandro
Russo, Guillermo Jorge
Palabras Claves: Fisica teorica
Fecha Edición: 2017
Resumen: Using supersymmetric localization, we consider four-dimensional N = 2 superconformal quiver gauge theories obtained from Zn 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 \lambda_I < \pi^2, where \lambda_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 e ective coupling by which one can express them in terms of correlators of the N = 4 theory. 4) One can de ne 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 nd remarkable cancellations of a certain number of planar loops, determined by the conformal dimension of the operator.
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