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- W3010332626 abstract "We consider four-dimensional, Riemannian, Ricci-flat metrics for which one or other of the self-dual or anti-self-dual Weyl tensors is type-D. Such metrics always have a valence-2 Killing spinor, and therefore a Hermitian structure and at least one Killing vector. We rederive the results of Przanowski and collaborators, that these metrics can all be given in terms of a solution of the $SU(infty)$-Toda field equation, and show that, when there is a second Killing vector commuting with the first, the method of Ward can be applied to show that the metrics can also be given in terms of an axisymmetric solution of the flat three-dimensional Laplacian. Thus in particular the field equations linearise. As a corollary, we show that the same technique linearises the field equations for a four-dimensional Einstein metric with anti-self-dual Weyl tensor and two commuting symmetries. Some examples of both constructions are given." @default.
- W3010332626 created "2020-03-13" @default.
- W3010332626 creator A5032430035 @default.
- W3010332626 date "2020-03-06" @default.
- W3010332626 modified "2023-09-27" @default.
- W3010332626 title "One-sided type-D Ricci-flat metrics" @default.
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