Genuinely sharp heat kernel estimates on compact rank-one symmetric spaces, for Jacobi expansions, on a ball and on a simplex

Abstract

We prove genuinely sharp two-sided global estimates for heat kernels on all compact rank-one symmetric spaces. This generalizes the authors' recent result obtained for a Euclidean sphere of arbitrary dimension. Furthermore, similar heat kernel bounds are shown in the context of classical Jacobi expansions, on a ball and on a simplex. These results are more precise than the qualitatively sharp Gaussian estimates proved recently by several authors.

16 pages

References in corpus (4)

• Sharp estimates of the spherical heat kernel
• Analysis in the multi-dimensional ball
• Gaussian bounds for the heat kernels on the ball and simplex: Classical approach
• Strictly Positive Definite Functions on Compact Two-Point Homogeneous Spaces: the Product Alternative