Binary Darboux Transformations in Bidifferential Calculus and Integrable Reductions of Vacuum Einstein Equations
Abstract
We present a general solution-generating result within the bidifferential calculus approach to integrable partial differential and difference equations, based on a binary Darboux-type transformation. This is then applied to the non-autonomous chiral model, a certain reduction of which is known to appear in the case of the D-dimensional vacuum Einstein equations with D-2 commuting Killing vector fields. A large class of exact solutions is obtained, and the aforementioned reduction is implemented. This results in an alternative to the well-known Belinski-Zakharov formalism. We recover relevant examples of space-times in dimensions four (Kerr-NUT, Tomimatsu-Sato) and five (single and double Myers-Perry black holes, black saturn, bicycling black rings).
Cite
@article{arxiv.1207.1308,
title = {Binary Darboux Transformations in Bidifferential Calculus and Integrable Reductions of Vacuum Einstein Equations},
author = {Aristophanes Dimakis and Folkert Müller-Hoissen},
journal= {arXiv preprint arXiv:1207.1308},
year = {2013}
}