Cubic couplings in D=6 N=4b supergravity on AdS_3\times S^3

Abstract

We determine the AdS exchange diagrams needed for the computation of 4--point functions of chiral primary operators in the SCFT_2 dual to the D=6 N=4b supergravity on the AdS_3\times S^3 background and compute the corresponding cubic couplings. We also address the issue of consistent truncation.

30 pages, 4 figures, LaTeX, uses feynman and pictex

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