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29 March 2024
 
  » arxiv » 0802.1463

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Lift of Invariant to Non-Invariant Solutions of Complex Monge-Amp'ere Equations
M. B. Sheftel ; A. A. Malykh ;
Date 11 Feb 2008
AbstractWe 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.
Source arXiv, 0802.1463
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