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The geometry and topology of stationary multiaxisymmetric vacuum black holes in higher dimensions

Vishnu Kakkat, Marcus Khuri, Jordan Rainone and Gilbert Weinstein

Vol. 322 (2023), No. 1, 59–97
Abstract

Extending recent work in 5 dimensions, we prove the existence and uniqueness of solutions to the reduced Einstein equations for vacuum black holes in (n + 3)-dimensional spacetimes admitting the isometry group × U (1)n, with Kaluza–Klein asymptotics for n 3. This is equivalent to establishing existence and uniqueness for singular harmonic maps φ: 3 Γ SL (n + 1, )SO (n + 1) with prescribed blow-up along Γ, a subset of the z-axis in 3. We also analyze the topology of the domain of outer communication for these spacetimes, by developing an appropriate generalization of the plumbing construction used in the lower-dimensional case. Furthermore, we provide a counterexample to a conjecture of Hollands–Ishibashi concerning the topological classification of the domain of outer communication. A refined version of the conjecture is then presented and established in spacetime dimensions less than 8.

Keywords
stationary solutions, black holes, domain of outer communication
Mathematical Subject Classification
Primary: 53C43, 53C50, 53C80, 83C05, 83C57
Milestones
Received: 19 March 2022
Revised: 6 July 2022
Accepted: 23 November 2022
Published: 3 May 2023
Authors
Vishnu Kakkat
Department of Mathematics and Department of Physics
Ariel University
Ariel
Israel
Marcus Khuri
Department of Mathematics
Stony Brook University
Stony Brook, NY
United States
Jordan Rainone
Department of Mathematics
Stony Brook University
Stony Brook, NY
United States
Gilbert Weinstein
Department of Mathematics and Department of Physics
Ariel University
Ariel
Israel

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