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Bent Ørsted

The Howe duality for the Dunkl version of the Dirac operator

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  • Bent Ørsted
  • Petr Somberg, Charles University, Czech Republic
  • Vladimir Soucek, Charles University, Czech Republic
  • Department of Mathematical Sciences
The classical Fischer decomposition of polynomials on Euclidean space makes it possible to express any polynomial as a sum of harmonic polynomials multiplied by powers of |x|2. A deformation of the Laplace operator was recently introduced by Ch.F. Dunkl. It has the property that the symmetry with respect to the orthogonal group is broken to a finite subgroup generated by reflections (a Coxeter group). It was shown by B. Ørsted and S. Ben Said that there is a deformation of the Fischer decomposition for polynomials with respect to the Dunkl harmonic functions. In Clifford analysis, a Dunkl version of the Dirac operator was introduced and studied by P. Cerejeiras, U. Kähler and G. Ren. The aim of the article is to describe an analogue of the Fischer decomposition for solutions of the Dunkl Dirac operator. The main methods used are coming from representation theory, in particular, from ideas connected with Howe dual pairs.
Original languageEnglish
JournalAdvances in Applied Clifford Algebras
Pages (from-to)403-415
Number of pages13
Publication statusPublished - 2009

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