Holographic correlators in AdS3

We derive the four-point correlators of scalar operators of dimension one in the supergravity limit of the D1D5 CFT holographically dual to string theory on AdS3×S3×ℳ, with ℳ either T4 or K3. We avoid the use of Witten diagrams but deduce our result from a limit of the heavy-heavy-light-light correlators computed in [1], together with several consistency requirements of the OPE in the various channels. This result represents the first holographic correlators of single-trace operators computed in AdS3.. This work was partially supported in part by the Science and Technology Facilities Council (STFC) Consolidated Grant ST/L000415/1 String theory, gauge theory & duality. C.W. is supported by a Royal Society University Research Fellowship No. UF16035