Lift of Invariant to Non-Invariant Solutions of Complex Monge-Ampère Equations

Details Lift of Invariant to Non-Invariant Solutions of Complex Monge-Ampère Equations Lift of Invariant to Non-Invariant Solutions of Complex Monge-Ampère Equations

2008-02-11

arxiv.org/abs/0802.1463v1

Physics

Mathematical Physics

15 pages, LaTeX2e

Scientific paper

We show how partner symmetries of the elliptic and hyperbolic complex Monge-Amp\`ere equations (CMA and HCMA) provide a lift of non-invariant solutions of three- and two-dimensional reduced equations, i.e., a lift of invariant solutions of the original CMA and HCMA equations, to non-invariant solutions of the latter four-dimensional equations. The lift is applied to non-invariant solutions of the two-dimensional Helmholtz equation to yield non-invariant solutions of CMA, and to non-invariant solutions of three-dimensional wave equation and three-dimensional hyperbolic Boyer-Finley equation to yield non-invariant solutions of HCMA. By using these solutions as metric potentials, it is possible to construct four-dimensional Ricci-flat metrics of Euclidean and ultra-hyperbolic signatures that have non-zero curvature tensors and no Killing vectors.

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