Abstract
We give equivalent characterizations for off-diagonal upper bounds of the heat kernel of a regular Dirichlet form on the metric measure space, in two settings: for the upper bounds with the polynomial tail (typical for jump processes) and for the upper bounds with the exponential tail (for diffusions). Our proofs are purely analytic and do not use the associated Hunt process.
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Grigor’yan, A., Hu, J. Off-diagonal upper estimates for the heat kernel of the Dirichlet forms on metric spaces. Invent. math. 174, 81–126 (2008). https://doi.org/10.1007/s00222-008-0135-9
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DOI: https://doi.org/10.1007/s00222-008-0135-9