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arXiv · 1710.06820

Unitary 4-point correlators from classical geometries

Alessandro Bombini·Andrea Galliani·Stefano Giusto·Emanuele Moscato·Rodolfo Russo
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Abstract

We compute correlators of two heavy and two light operators in the strong coupling and large $c$ limit of the D1D5 CFT which is dual to weakly coupled AdS$_3$ gravity. The light operators have dimension two and are scalar descendants of the chiral primaries considered in arXiv:1705.09250, while the heavy operators belong to an ensemble of Ramond-Ramond ground states. We derive a general expression for these correlators when the heavy states in the ensemble are close to the maximally spinning ground state. For a particular family of heavy states we also provide a result valid for any value of the spin. In all cases we find that the correlators depend non-trivially on the CFT moduli and are not determined by the symmetries of the theory, however they have the properties expected for correlators among pure states in a unitary theory, in particular they do not decay at large Lorentzian times.

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Alessandro Bombini, Andrea Galliani, Stefano Giusto, Emanuele Moscato, Rodolfo Russo. 2017-10-31. Unitary 4-point correlators from classical geometries. https://doi.org/10.1140/epjc%2Fs10052-017-5492-3

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