# BPS black hole horizons from massive IIA

## TL;DR

This paper explores the attractor mechanism for BPS black holes in massive IIA supergravity, revealing how adding matter multiplets affects horizon solutions and their uniqueness, with implications for holography.

## Contribution

It extends the analysis of BPS black hole horizons in massive IIA to include additional matter fields, uncovering new solutions and parameter dependencies.

## Key findings

- Adding vector multiplets yields new horizon solutions with free parameters.
- Extending hypermultiplets does not change existing attractor solutions.
- The three-vector multiplet model is relevant for massive IIA holography.

## Abstract

The maximal four-dimensional supergravity with a dyonic ISO(7) gauging that arises from the reduction of massive IIA on a six-sphere has recently been shown to accommodate static BPS black holes with hyperbolic horizons. When restricted to the N=2 subsector that retains one vector multiplet and the universal hypermultiplet, the attractor mechanism was shown to fix both the vector charges and the scalar fields at the horizon to a unique configuration in terms of the gauging parameters. In order to assess the (non-)uniqueness of BPS black hole horizons from massive IIA, we extend the study of the attractor mechanism to other N=2 subsectors including additional matter multiplets. We note that, while extending the hypermultiplet sector does not modify the set of solutions to the attractor equations, the inclusion of additional vector multiplets results in new hyperbolic/spherical horizons containing free parameters. The model with three vector multiplets and the universal hypermultiplet, which is the massive IIA analogue of the STU-model from M-theory, may play a relevant role in massive IIA holography.