Supersymmetric isolated horizons in ADS spacetime

TL;DR

This paper explores the properties of supersymmetric isolated horizons in anti-de Sitter spacetime, revealing their extremality, electromagnetic characteristics, and geometric features within the framework of N=2 gauged supergravity.

Contribution

It applies the isolated horizon framework to supersymmetric horizons in ADS spacetime, clarifying their physical and geometric properties and their relation to supersymmetry.

Findings

Supersymmetric isolated horizons are necessarily extremal.

Rotating SIHs must have non-trivial electromagnetic fields.

Non-rotating SIHs have constant curvature horizons and magnetic charge.

Abstract

We discuss various physical aspects of nonextremal, extremal and supersymmetric black holes in asymptotically anti-de Sitter (ADS) spacetimes. Specifically, we discuss how the isolated horizon (IH) framework leads to an ambiguity-free description of rotating black holes in these spacetimes. We then apply this framework to investigate the properties of supersymmetric isolated horizons (SIHs) in four-dimensional N = 2 gauged supergravity. Among other results we find that they are necessarily extremal, that rotating SIHs must have non-trivial electromagnetic fields, and that non-rotating SIHs necessarily have constant curvature horizon cross sections and a magnetic (though not electric) charge.