AdS duals of matrix strings

We review recent work on the holographic duals of type II and heterotic matrix string theories described by warped AdS3 supergravities. In particular, we compute the spectra of Kaluza-Klein primaries for type I, II supergravities on warped AdS3 * S7 and match them with the primary operators in the dual two-dimensional gauge theories. The presence of nontrivial warp factors and dilaton profiles requires a modification of the familiar dictionary between masses and ʹscalingʹ dimensions of fields and operators. We present these modifications for the general case of domain wall/QFT correspondences between supergravities on warped AdSd+1 * Sq geometries and super Yang-Mills theories with 16 supercharges.