Seminar series
Date
Fri, 28 Feb 2025
12:00
12:00
Location
L5
Speaker
Maciej Dunajski
Organisation
Cambridge
We establish the rigidity theorem for black hole extremal horizons, and prove that their compact cross-sections must admit a Killing vector field. The intrinsic Riemannian geometry of extremal horizons admits a quasi-Einstein structure. We shall discuss another class of such structures corresponding to projective metrizability, where global results can be obtained. In this case the quasi-Einstein structure is governed by the Hitchin equations.