Higher Symmetries of the Square of the Laplacian

Details Higher Symmetries of the Square of the Laplacian Higher Symmetries of the Square of the Laplacian

2006-10-20

arxiv.org/abs/math/0610610v1

Mathematics

Differential Geometry

17 pages

Scientific paper

The symmetry operators for the Laplacian in flat space were recently described and here we consider the same question for the square of the Laplacian. Again, there is a close connection with conformal geometry. There are three main steps in our construction. The first is to show that the symbol of a symmetry is constrained by an overdetermined partial differential equation. The second is to show existence of symmetries with specified symbol (using a simple version of the AdS/CFT correspondence). The third is to compute the composition of two first order symmetry operators and hence determine the structure of the symmetry algebra. There are some interesting differences as compared to the corresponding results for the Laplacian.

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