Lift of noninvariant solutions of heavenly equations from three to four dimensions and new ultra-hyperbolic metrics

Details Lift of noninvariant solutions of heavenly equations from three to four dimensions and new ultra-hyperbolic metrics Lift of noninvariant solutions of heavenly equations from three to four dimensions and new ultra-hyperbolic metrics

2007-04-25

arxiv.org/abs/0704.3335v2

Physics

Mathematical Physics

24 pages, submitted to J. Phys. A: Math. Theor

Scientific paper

10.1088/1751-8113/40/31/014

We demonstrate that partner symmetries provide a lift of noninvariant solutions of three-dimensional Boyer-Finley equation to noninvariant solutions of four-dimensional hyperbolic complex Monge-Ampere equation. The lift is applied to noninvariant solutions of the Boyer-Finley equation, obtained earlier by the method of group foliation, to yield noninvariant solutions of the hyperbolic complex Monge-Ampere equation. Using these solutions we construct new Ricci-flat ultra-hyperbolic metrics with non-zero curvature tensor that have no Killing vectors.

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