The Z_2^n Dirac-Dunkl operator and a higher rank Bannai-Ito algebra

Analysis Seminar
Wednesday, April 27, 2016 - 2:05pm for 1 hour (actually 50 minutes)
Skiles 005
Vincent Genest – MIT
Plamen Iliev
In this talk, I will discuss the n-dimensional Dirac-Dunkl operator associated with the reflection group Z_2^{n}. I will exhibit the symmetries of this operator, and describe the invariance algebra they generate. The symmetry algebra will be identified as a rank-n generalization of the Bannai-Ito algebra. Moreover, I will explain how a basis for the kernel of this operator can be constructed using a generalization of the Cauchy-Kovalevskaia extension in Clifford analysis, and how these basis functions form a basis for irreducible representations of Bannai-Ito algebra. Finally, I will conjecture on the role played by the multivariate Bannai-Ito polynomials in this framework.