中文

弱无序下超出$L^2$相的有向聚合物配分函数涨落

概率论 2023-07-11 v3 数学物理 math.MP

摘要

我们研究有界环境中的有向聚合物模型在弱无序但无L2L^2有界性下的行为,具体研究场(Wn0,x)xZd(W_n^{0,x})_{x\in\mathbb Z^d}的均匀化速度,其中Wn0,xW_n^{0,x}表示起始于xx的聚合物的关联鞅。我们证明,在直径为n1/2n^{1/2}的集合上适当重新中心化的空间平均以速率nξ+o(1)n^{-\xi+o(1)}收敛到零,其中指数ξ\xi是逆温度β\beta的显式函数。

关键词

引用

@article{arxiv.2202.02907,
  title  = {Fluctuations of partition functions of directed polymers in weak disorder beyond the $L^2$-phase},
  author = {Stefan Junk},
  journal= {arXiv preprint arXiv:2202.02907},
  year   = {2023}
}

备注

v2: corrected a mistake in Theorem 1.4(i). v3: revised version with more details on the proofs. Removed an assumption in Theorem 1.1