Blackening S-folds

TL;DR

This paper constructs a universal AdS4 black hole within type IIB supergravity that connects to various S-fold backgrounds dual to $ ext{N}=2$ and $ ext{N}=4$ superconformal field theories, revealing new solutions with specific symmetries.

Contribution

It provides the explicit type IIB embedding of a universal AdS4 black hole for different S-fold asymptotics, including novel solutions with scale separation.

Findings

Explicit embedding of universal AdS4 black hole for two S-fold backgrounds.

Discovery of a new 1/16-BPS AdS2 x M8 background with controlled scale separation.

Connections established between black hole solutions and dual superconformal field theories.

Abstract

We construct the universal AdS$_{4}$ black hole that asymptotes to the $(\varphi,\chi)$-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 $\,\textrm{U}(2)\,$ symmetry at $\,(\varphi,\chi)=(0,0)\,$ and the $\,\mathcal{N}=4\,$ S-fold with $\,\textrm{SO}(4)\,$ symmetry at $\,(\varphi,\chi)=(1,0)$. As a byproduct, we also present a novel $1/16$-BPS two-parameter family of $\,\textrm{AdS}_{2} \times \textrm{M}_{8}\,$ S-fold backgrounds with $\,\textrm{M}_{8}=\mathbb{H}^{2} \times \textrm{S}^{5} \times \textrm{S}^{1}$ that features a parametrically-controlled scale separation.