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Sharp estimates for $W$-invariant Dunkl and heat kernels in the $A_n$ case (2111.13529v1)

Published 26 Nov 2021 in math.RT

Abstract: In this article, we prove exact estimates for the $W$-invariant Dunkl kernel and heat kernel, for the root system of type $A$ with arbitrary positive multiplicities. We apply the estimates of the $W$-invariant Dunkl heat kernel to compute sharp estimates for the Newton kernel and for the $s$-stable semigroups generated by a fractional power of the $W$-invariant Dunkl Laplacian.