Orthogonal Polynomial Duality and Unitary Symmetries of Multi-species ASEP$$(q,\varvec{\theta })$$ and Higher-Spin Vertex Models via $$^*$$-Bialgebra Structure of Higher Rank Quantum Groups

Orthogonal Polynomial Duality and Unitary Symmetries of Multi-species ASEP$$(q,\varvec{\theta })$$ and Higher-Spin Vertex Models via $$^*$$-Bialgebra Structure of Higher Rank Quantum Groups
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基于高阶量子群的$$^*$$-双代数结构的多物种ASEP$$(q,varvec{ heta })$$和高自旋顶点模型的正交多项式对偶性和酉对称性

DOI:
10.1007/s00220-024-04979-8
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发表时间:
2022
影响因子:
2.4
通讯作者:
Zhengye Zhou
Zhengye Zhou
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
C. Franceschini;Jeffrey Kuan;Zhengye Zhou

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我们提出了一种新颖的通用方法,从 Drinfeld-Jimbo 量子群的 $^*$-双代数结构中产生正交多项式对偶性。 $^*$--结构允许构造某些 \textit{酉} 对称性,这意味着对偶函数的正交性。对于量子群 $\mathcal{U}_q(\mathfrak{gl}_{n+1})$,结果是 $n$--species ASEP$(q,\boldsymbol{\theta})$ 的嵌套多元 $q$--Krawtchouk 对偶性。该方法也适用于其他量化的简单李代数和随机顶点模型。作为所发现的对偶关系的概率应用,我们提供了两种 $q$-TAZRP(完全不对称零范围过程)的 $q-$shifted 阶乘矩(即 $q$-Pochhammer 符号的类似物)的显式公式。
We propose a novel, general method to produce orthogonal polynomial dualities from the $^*$--bialgebra structure of Drinfeld--Jimbo quantum groups. The $^*$--structure allows for the construction of certain \textit{unitary} symmetries, which imply the orthogonality of the duality functions. In the case of the quantum group $\mathcal{U}_q(\mathfrak{gl}_{n+1})$, the result is a nested multivariate $q$--Krawtchouk duality for the $n$--species ASEP$(q,\boldsymbol{\theta})$. The method also applies to other quantized simple Lie algebras and to stochastic vertex models. As a probabilistic application of the duality relation found, we provide the explicit formula of the $q-$shifted factorial moments (namely the $q$-analogue of the Pochhammer symbol) for the two--species $q$--TAZRP (totally asymmetric zero range process).
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发表时间: 2023
影响因子: 1.6
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