Static and stationary multiple soliton solutions to the Einstein equations

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Abstract
The application of the Belinsky–Zakharov solution‐generating technique, i.e., the inverse scattering method, to generate stationary axially symmetric solutions to the vacuum Einstein equations is reduced to a single quadrature when the seed solution is diagonal. The possibility of having real odd‐number soliton solutions is investigated. These solutions represent solitonic perturbations of Euclidean metrics. The possibility of using instantons as seed solutions is also investigated. The one‐ and two‐soliton solutions generated from a diagonal seed solution are studied. As an application, a unified derivation of some well‐known static solutions, like the Schwarzschild metric and the Chazy–Curzon metric, as well as other new metrics is presented. By using these metrics as seed solutions, some known stationary solutions, like the Kerr‐NUT metric, the double Kerr metric, and the rotating Weyl C‐metric, as well as other new metrics are also derived in a unified way.

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