Three-Loop Four-Point Correlator in N=4 SYM

Details Three-Loop Four-Point Correlator in N=4 SYM Three-Loop Four-Point Correlator in N=4 SYM

2000-03-13

arxiv.org/abs/hep-th/0003096v1

Phys.Lett. B482 (2000) 309-314

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, standard latex, uses feynman and curves.sty

Scientific paper

10.1016/S0370-2693(00)00515-3

We explicitly compute the complete three-loop (O(g^4)) contribution to the four-point function of chiral primary current-like operators <(q)^2 q^2 (q)^2 q^2> in any finite N=2 SYM theory. The computation uses N=2 harmonic supergraphs in coordinate space. Dramatic simplifications are achieved by a double insertion of the N=2 SYM linearized action, and application of superconformal covariance arguments to the resulting nilpotent six-point amplitude. The result involves polylogarithms up to fourth order of the conformal cross ratios. It becomes particularly simple in the N=4 special case.

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