A pr 2 01 1 PFAFFIAN STOCHASTIC DYNAMICS OF STRICT PARTITIONS

A pr 2 01 1 PFAFFIAN STOCHASTIC DYNAMICS OF STRICT PARTITIONS
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A pr 2 01 1 严格分区的普法随机动力学

DOI:
10.1007/s10955-011-0280-1
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发表时间:
2021
影响因子:
1.6
通讯作者:
L. Petrov
L. Petrov
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
L. Petrov

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我们研究了严格划分(具有不同部分的划分)上的一族连续时间马尔可夫跳跃过程,它保持了Borodin[Bor99]引入的关于无限对称群的射影表示的分布。过程的一维分布(即Borodin测度)具有行列式结构。我们用一定的Pfaffian来表示过程的动态关联函数,并利用Gauss超几何函数给出了静态关联核和动态关联核的显式公式。此外,我们能够通过Borodin和Olshanski在一系列文章中得到的关于划分的z-测度的相关核来表达我们的相关核(静态和动态)。关于固定时间案件的结果在说明[Pet10a]中公布。本论文的一部分包含了这些结果的证据。
We study a family of continuous time Markov jump processes on strict partitions (partitions with distinct parts) preserving the distributions introduced by Borodin [Bor99] in connection with projective representations of the infinite symmetric group. The one-dimensional distributions of the processes (i.e., the Borodin’s measures) have determinantal structure. We express the dynamical correlation functions of the processes in terms of certain Pfaffians and give explicit formulas for both the static and dynamical correlation kernels using the Gauss hypergeometric function. Moreover, we are able to express our correlation kernels (both static and dynamical) through those of the z-measures on partitions obtained previously by Borodin and Olshanski in a series of papers. The results about the fixed time case were announced in the note [Pet10a]. A part of the present paper contains proofs of those results.
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