Hair in the Back of a Throat: Non-Supersymmetric Multi-Center Solutions from K\"ahler Manifolds

TL;DR

This paper constructs a broad class of non-supersymmetric multi-center solutions in five-dimensional supergravity using K"ahler manifolds, revealing an infinite set of regular solutions with complex topology resembling black hole horizons.

Contribution

It introduces explicit non-supersymmetric multi-center solutions based on K"ahler manifolds with U(1) symmetry, expanding the landscape of known supergravity solutions.

Findings

Infinite regular multi-center solutions found

Solutions asymptotic to BMPV black hole horizon

Utilizes K"ahler manifolds with non-trivial topology

Abstract

We find a class of non-supersymmetric multi-center solutions of the STU model of five-dimensional ungauged supergravity. The solutions are determined by a system of linear equations defined on a four-dimensional K\"ahler manifold with vanishing Ricci scalar and a U(1) isometry. The most general class of such K\"ahler manifolds was studied by LeBrun and they have non-trivial 2-cycles that can support the topological fluxes characteristic of bubbled geometries. After imposing an additional U(1) symmetry on the base we find explicit multi-center supergravity solutions. We show that there is an infinite number of regular multi-center solutions with non-trivial topology that are asymptotic to the near-horizon limit of a BMPV black hole.