BPS Black Holes in AdS4 from M-theory

TL;DR

This paper derives flow and attractor equations for supersymmetric AdS4 black holes in gauged supergravity from M-theory, analyzing solution spaces and constructing explicit black hole examples.

Contribution

It formulates the supergravity equations for hypermultiplet-coupled theories from M-theory reductions and explores their solution space, including explicit black hole solutions.

Findings

Solution space of AdS2×Σg horizons is four-dimensional for Q^{111} truncation.

Explicit numerical black hole solutions are constructed.

The analysis extends to other Sasaki-Einstein reductions with smaller solution spaces.

Abstract

We study supersymmetric black holes in $AdS_4$ in the framework of four dimensional gauged $\N=2$ supergravity coupled to hypermultiplets. We derive the flow equations for a general electrically gauged theory where the gauge group is Abelian and, restricting them to the fixed points, we derive the gauged supergravity analogue of the attractor equations for theories coupled to hypermultiplets. The particular models we analyze are consistent truncations of M-theory on certain Sasaki-Einstein seven-manifolds. We study the space of horizon solutions of the form $AdS_2\times \Sigma_g$ with both electric and magnetic charges and find a four-dimensional solution space when the theory arises from a reduction on $Q^{111}$. For other $SE_7$ reductions, the solutions space is a subspace of this. We construct explicit examples of spherically symmetric black holes numerically.