Black holes with spindles at the horizon

Suvendu Giri

doi:10.1007/JHEP06(2022)145

paper

Black holes with spindles at the horizon

arXiv:2112.04431 · doi:10.1007/JHEP06(2022)145

Abstract

We construct $A d S_{4} \times Σ$ and $A d S_{2} \times Σ \times Σ_{g}$ solutions in F(4) gauged supergravity in six dimensions, where $Σ$ is a two dimensional manifold of non-constant curvature with conical singularities at its two poles, called a spindle, and $Σ_{g}$ is a constant curvature Riemann surface of genus g. We find that the first solution realizes a "topologically topological twist", while the second class of solutions gives rise to an "anti twist". We compute the holographic free energy of the $A d S_{4} \times Σ$ solution and find that it matches the entropy computed by extremizing an entropy functional that is constructed by gluing gravitational blocks. For the $A d S_{2} \times Σ \times Σ_{g}$ solution, we find that the Bekenstein-Hawking entropy is reproduced by extremizing an appropriately defined entropy functional, which leads us to conjecture that this solution is dual to a three dimensional SCFT on a spindle. A class of the $A d S_{2} \times Σ \times Σ_{g}$ solutions can be embedded in four dimensional T3 gauged supergravity, which is a subtruncation of the six dimensional theory.

v2: Published version

Black holes with spindles at the horizon

Abstract

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