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arXiv · 1801.01477

Double-Trace Deformations of Conformal Correlations

Simone Giombi·Vladimir Kirilin·Eric Perlmutter
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Abstract

Large $N$ conformal field theories often admit unitary renormalization group flows triggered by double-trace deformations. We compute the change in scalar four-point functions under double-trace flow, to leading order in $1/N$. This has a simple dual in AdS, where the flow is implemented by a change of boundary conditions, and provides a physical interpretation of single-valued conformal partial waves. We extract the change in the conformal dimensions and three-point coefficients of infinite families of double-trace composite operators. Some of these quantities are found to be sign-definite under double-trace flow. As an application, we derive anomalous dimensions of spinning double-trace operators comprised of non-singlet constituents in the $O(N)$ vector model.

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Simone Giombi, Vladimir Kirilin, Eric Perlmutter. 2018-05-21. Double-Trace Deformations of Conformal Correlations. https://doi.org/10.1007/jhep02(2018)175

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