Blackening S-folds

Abstract

We construct the universal AdS${}_4$ black hole that asymptotes to the $(\ddot{I}†,\ddot{I}‡)$-family of type IIB S-fold backgrounds dual to the conformal manifold of $\mathcal{N}=2$ S-fold CFT's. We present the explicit type IIB embedding of such a universal black hole for two particular asymptotics: the $\mathcal{N}=2$ S-fold with $\text{U}(2)$ symmetry at $(\ddot{I}†,\ddot{I}‡)=(0,0)$ and the $\mathcal{N}=4$ S-fold with $\text{SO}(4)$ symmetry at $(\ddot{I}†,\ddot{I}‡)=(1,0)$. As a byproduct, we also present a novel $1/16$-BPS two-parameter family of ${\text{AdS}}_2\times {\text{M}}_8$ S-fold backgrounds with ${\text{M}}_8={\mathbb{H}}^2\times {\text{S}}^5\times {\text{S}}^1$ that features a parametrically-controlled scale separation.

30 pages