TITLE:
Heat Kernel Estimates on Simple Random Walks and On-Diagonal Upper Bounds
AUTHORS:
Runquan Zuo, Yuxiao Yan, Zishan Zhu, Liwen Yao, Qihao Han
KEYWORDS:
Heat Kernel, Simple Random Walk, On-Diagonal Estimate
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.12 No.10,
October
31,
2024
ABSTRACT: We primarily provide several estimates for the heat kernel defined on the 2-dimensional simple random walk. Additionally, we offer an estimate for the heat kernel on high-dimensional random walks, demonstrating that the heat kernel in higher dimensions converges rapidly. We also compute the constants involved in the estimate for the 1-dimensional heat kernel. Furthermore, we discuss the general case of on-diagonal estimates for the heat kernel.