On the classification of extremal black holes
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Tue, 01/12/2009 12:00 |
James Lucietti (Imperial) |
Relativity Seminar  |
L3 |
| Extremal black holes are of interest as they are expected have simpler quantum descriptions than their non-extremal counterparts. Any extremal black hole solution admits a well defined notion of a near horizon geometry which solves the same field equations. I will describe recent progress on the general understanding of such near horizon geometries in four and higher dimensions. This will include the proof of near-horizon symmetry enhancement and the explicit classification of near-horizon geometries (in a variety of settings). I will also discuss how one can use such results to prove classification/uniqueness theorems for asymptotically flat extremal vacuum black holes in four and five dimensions. | |||