Heat Equations and the Weighted $\bar\partial$-Problem

Details Heat Equations and the Weighted $\bar\partial$-Problem Heat Equations and the Weighted $\bar\partial$-Problem

2007-04-20

arxiv.org/abs/0704.2768v5

Mathematics

Analysis of PDEs

v5. 33 pages. Cleaned up the statements of the results, improved Theorem 4.4 and Theorem 7.3

Scientific paper

The purpose of this article is to establish regularity and pointwise upper bounds for the (relative) fundamental solution of the heat equation associated to the weighted dbar-operator in $L^2(C^n)$ for a certain class of weights. The weights depend on a parameter, and we find pointwise bounds for heat kernel, as well as its derivatives in time, space, and the parameter. We also prove cancellation conditions for the heat semigroup. We reduce the $n$-dimensional case to the one-dimensional case, and the estimates in one-dimensional case are achieved by Duhamel's principle and commutator properties of the operators. As an application, we recover estimates of heat kernels on polynomial models in $C^2$.

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