Integrability of N=6 Chern-Simons Theory at Six Loops and Beyond

Details Integrability of N=6 Chern-Simons Theory at Six Loops and Beyond Integrability of N=6 Chern-Simons Theory at Six Loops and Beyond

2009-11-04

arxiv.org/abs/0911.0689v3

Physics

High Energy Physics

High Energy Physics - Theory

1+39 pages, 12 figures, references added, minor structural changes, typos corrected

Scientific paper

We study issues concerning perturbative integrability of N=6 Chern-Simons theory at planar and weak `t Hooft coupling regime. By Feynman diagrammatics, we derive so called maximal-ranged interactions in the quantum dilatation generator, originating from homogeneous and inhomogeneous diagrams. These diagrams require proper regularization of not only ultraviolet but also infrared divergences. We first consider standard operator mixing method. We show that homogeneous diagrams are obtainable by recursive method to all orders. The method, however, is not easily extendable to inhomogeneous diagrams. We thus consider two-point function method and study both operator contents and spectrum of the quantum dilatation generator up to six loop orders. We show that, of two possible classes of operators, only one linear combination actually contributes. Curiously, this is exactly the same combination as in N=4 super Yang-Mills theory. We then study spectrum of anomalous dimension up to six loops. We find that the spectrum agrees perfectly with the prediction based on quantum integrability. In evaluating the six loop diagrams, we utilized remarkable integer-relation algorithm (PSLQ) developed by Ferguson, Baily and Arno.

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