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

TL;DR

This paper calculates cubic couplings and exchange diagrams in D=6 N=4b supergravity on AdS_3×S^3, aiding the understanding of 4-point functions in the dual SCFT_2.

Contribution

It provides explicit computations of cubic couplings and exchange diagrams for the first time in this supergravity background.

Findings

Explicit cubic couplings are derived.

Exchange diagrams for 4-point functions are determined.

Addresses consistent truncation issues.

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.