Journal
NUCLEAR PHYSICS B
Volume 586, Issue 1-2, Pages 547-588Publisher
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DOI: 10.1016/S0550-3213(00)00439-9
Keywords
AdS/CFT correspondence; conformal field theory; non-perturbative methods
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We present a detailed analysis of the 4-point functions of the lowest weight chiral primary operators O-I similar to tr(phi((i)phi(j))) in N= 4 SYM4 at strong coupling and show that their structure is compatible with the predictions of AdS/CFT correspondence. In particular, all power-singular terms in the 4-point functions exactly coincide with the contributions coming from the conformal blocks of the CPOs, the R-symmetry current and the stress tensor. Operators dual to string modes decouple at strong coupling. We compute the anomalous dimensions and the leading 1/N-2 corrections to the normalization constants of the 2- and 3-point functions of scalar and vector double-trace operators with approximate dimensions 4 and 5, respectively. We also find that the conformal dimensions of certain towers of double-trace operators in the 105, 84 and 175 irreps are non-renormalized. We show that, despite the absence of a non-renormalization theorem for the double-trace operator in the 20 irrep, its anomalous dimension vanishes. As by-products of our investigation, we derive explicit expressions for the conformal block of the stress tensor, and for the conformal partial wave amplitudes of a conserved current and of a stress tensor in d dimensions. (C) 2000 Elsevier Science B.V. All rights reserved.
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