中文

基于贪婪格点动物的二维随机场Ising模型关联长度

概率论 2022-07-20 v3 数学物理 math.MP

摘要

对于随机场由方差为ϵ2\epsilon^2的独立同分布零均值高斯变量给出的二维随机场Ising模型,我们研究(一种自然的)关联长度概念,即随机场与边界条件对自旋磁化的影响相当时的盒子临界尺寸。我们证明当ϵ0\epsilon \to 0时,在零温下关联长度按eΘ(ϵ4/3)e^{\Theta(\epsilon^{-4/3})}标度(且我们的上界适用于所有正温度)。

关键词

引用

@article{arxiv.2011.08768,
  title  = {Correlation length of the two-dimensional random field Ising model via greedy lattice animal},
  author = {Jian Ding and Mateo Wirth},
  journal= {arXiv preprint arXiv:2011.08768},
  year   = {2022}
}

备注

Section 4 explains (without claiming credit) the proof of greedy lattice animal using Talagrand (2014); Section 5 keeps our `original' proof as a record (which will be omitted from the journal version)