首达渗流时间常数的变分公式
概率论
2016-06-06 v3
摘要
我们考虑正方形格点 上具有正定、平稳遍历权重的首达渗流。设 为从原点到 中点 的首达时间。缩放后的首达时间 当 时收敛于时间常数,这可视为离散 Hamilton-Jacobi-Bellman (HJB) 方程的均匀化问题。我们推导了时间常数的精确变分公式,并构建了一个显式迭代过程以产生该变分公式的极小值(在对称性假设下)。我们明确指出了该迭代何时能产生校正项。
引用
@article{arxiv.1311.0316,
title = {Variational formula for the time-constant of first-passage percolation},
author = {Arjun Krishnan},
journal= {arXiv preprint arXiv:1311.0316},
year = {2016}
}
备注
33 pages, 1 figure. The proof has been updated so that it's completely discrete. The previous version of the proof may be found in https://arxiv.org/abs/1406.1108 . Accepted for publication in Communications in Pure and Applied Mathematics