TL;DR
This paper classifies all pseudo-supersymmetric near-horizon geometries of extremal black holes in five-dimensional de-Sitter supergravity, revealing three distinct solution types including known and novel horizon topologies.
Contribution
It provides a complete classification of near-horizon geometries in this setting, identifying new solutions with T^3 and S^1*S^2 topologies.
Findings
Identified three types of near-horizon geometries.
Connected one solution to extremal de Sitter BMPV black holes.
Discovered two new solutions with non-S^3 horizon topologies.
Abstract
We classify all pseudo-supersymmetric near horizon geometries of extremal black holes in five dimensional de-Sitter supergravity coupled to vector multiplets. We find that there are three types of solution. The first type corresponds to the near-horizon geometry of extremal de Sitter BMPV black holes, and the spatial cross-section of the horizon is topologically S^3. The other two solutions cannot be embedded into the minimal de-Sitter supergravity theory, and correspond to near-horizon geometries for which the spatial cross-sections of the horizon are T^3 or S^1 * S^2.
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