paper

Two-particle spectrum of tensor multiplets coupled to gravity

arXiv:2104.00036 · doi:10.1103/PhysRevD.104.126022

Abstract

We study the spectrum of certain two-particle operators in the supergravity regime of the D1-D5 system, focussing on the four-point correlators of tensor multiplets on at tree level. In Mellin space, these are nicely determined by a single amplitude, which makes manifest the large limit, the connection with the flat space S-matrix, and the six dimensional conformal symmetry. We compute the superconformal blocks for the two-dimensional conformal theory at the boundary, and then we obtain a formula for the anomalous dimensions of the operators exchanged in the symmetric and anti-symmetric flavor channels. These anomalous dimensions solve an unmixing problem which is analogous to the one in , with interesting modifications. Along the way we show how the superconformal blocks relate to those in SYM in four dimensions, and we provide new intuition on the known data for .

v1 5 pages; v2 some typos fixed, extended version, match PRD version

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