arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2001.11195math.RTmath-phmath.MP
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Racah代数:概述和最近的结果

The Racah algebra: An overview and recent results

Hendrik De Bie, Plamen Iliev, Wouter van de Vijver, Luc Vinet

摘要:

综述了秩为$n - 2$的Racah代数$\mathcal{R}_n$的最新结果. $\mathcal{R}_n$是根据生成元和关系定义的,并且位于$\mathcal{U}(\mathfrak{su}(1,1))^{\otimes n}$中$\mathfrak{su}(1,1)$的对角作用的中心化器中。讨论了它与多元Racah多项式的关系。证明了它是$ (n-1)$ -球面上一般超可积模型的对称代数,并给出了一些有趣的实现。

英文摘要:

Recent results on the Racah algebra $\mathcal{R}_n$ of rank $n - 2$ are reviewed. $\mathcal{R}_n$ is defined in terms of generators and relations and sits in the centralizer of the diagonal action of $\mathfrak{su}(1,1)$ in $\mathcal{U}(\mathfrak{su}(1,1))^{\otimes n}$. Its connections with multivariate Racah polynomials are discussed. It is shown to be the symmetry algebra of the generic superintegrable model on the $ (n-1)$ - sphere and a number of interesting realizations are provided.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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