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arXiv 1602.00727math.PR
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Hall-Littlewood随机平面划分的KPZ和Airy极限

KPZ and Airy limits of Hall-Littlewood random plane partitions

Evgeni Dimitrov

摘要:

在本文中,我们考虑一个平面划分上的概率分布,这是作为一个单参数推广的q^{体积}测量。这种推广与经典的多元Hall-Littlewood多项式密切相关,它首先由Vuletic引入。我们证明,随着平面分区变大(q去1,而霍尔-利特尔伍德参数t是固定的),缩放的随机平面分区的底部切片收敛到一个确定性的极限形状,和一个点的波动周围的极限形状渐近给出的GUE Tracy-Widom分布。另一方面,如果t同时收敛到它自己的临界值1,波动反而收敛到一维Kardar-Parisi-Zhang(KPZ)方程与所谓的窄楔初始数据。我们的论点的代数部分是密切相关的麦克唐纳过程的形式主义。分析部分包括详细的渐近分析所产生的弗雷德霍姆行列式。

英文摘要:

In this paper we consider a probability distribution on plane partitions, which arises as a one-parameter generalization of the q^{volume} measure. This generalization is closely related to the classical multivariate Hall-Littlewood polynomials, and it was first introduced by Vuletic. We prove that as the plane partitions become large (q goes to 1, while the Hall-Littlewood parameter t is fixed), the scaled bottom slice of the random plane partition converges to a deterministic limit shape, and that one-point fluctuations around the limit shape are asymptotically given by the GUE Tracy-Widom distribution. On the other hand, if t simultaneously converges to its own critical value of 1, the fluctuations instead converge to the one-dimensional Kardar-Parisi-Zhang (KPZ) equation with the so-called narrow wedge initial data. The algebraic part of our arguments is closely related to the formalism of Macdonald processes. The analytic part consists of detailed asymptotic analysis of the arising Fredholm determinants.

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