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arXiv 2005.00126math.PR
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可积定向聚合物模型的浓度

Concentration for integrable directed polymer models

Christian Noack, Philippe Sosoe

摘要:

在本文中,我们考虑四个可积模型的定向聚合物的自由能是已知的表现出KPZ波动。在我们最近对O 'Connell-Yor聚合物的研究中,介绍了一种用于分析这些模型的通用框架。我们得到的中心矩的分拆函数,任何顺序,近最佳规模$N^{1/3+ε}$,使用迭代法的估计。在利用不变结构的创新中,我们开发了自由能和边界权重的函数之间的相关性公式,该公式由O 'Connell-Yor案例分析中出现的部分代替高斯分部积分法。

英文摘要:

In this paper, we consider four integrable models of directed polymers for which the free energy is known to exhibit KPZ fluctuations. A common framework for the analysis of these models was introduced in our recent work on the O'Connell-Yor polymer. We derive estimates for the central moments of the partition function, of any order, on the near-optimal scale $N^{1/3+ε}$, using an iterative method. Among the innovations exploiting the invariant structure, we develop formulas for correlations between functions of the free energy and the boundary weights that replace the Gaussian integration by parts appearing in the analysis of the O'Connell-Yor case.

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