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量子代数su_q(2)在实二维球面上的$q \in R^+$或一般$q \in S^1$的酉表示

Unitary representations of the quantum algebra su_q(2) on a real two-dimensional sphere for $q \in R^+$ or generic $q \in S^1$

M. Irac-Astaud, C. Quesne

摘要:

不久前,Rideau和Winternitz介绍了量子代数su_q(2)在实二维球面或实平面上的一种实现,并构造了它用q-特殊函数表示的基,这些q-特殊函数可以用q-Vilenkin函数表示,并与小q-Jacobi函数、q-球面函数和q-勒让德多项式有关。在他们的研究中,q值被隐含地限制为$q \in R^+$。在本文中,我们将他们的工作扩展到$q \in S^1$的通用值的情况(即,q值不同于单位单位根)。此外,我们通过确定一些适当的标量积,将两种类型的q值,$q \in R^+$和通用$q \in S^1$的表示单位化。从后者出发,我们推出了q-Vilenkin函数所满足的正交关系。

英文摘要:

Some time ago, Rideau and Winternitz introduced a realization of the quantum algebra su_q(2) on a real two-dimensional sphere, or a real plane, and constructed a basis for its representations in terms of q-special functions, which can be expressed in terms of q-Vilenkin functions, and are related to little q-Jacobi functions, q-spherical functions, and q-Legendre polynomials. In their study, the values of q were implicitly restricted to $q \in R^+$. In the present paper, we extend their work to the case of generic values of $q \in S^1$ (i.e., q values different from a root of unity). In addition, we unitarize the representations for both types of q values, $q \in R^+$ and generic $q \in S^1$, by determining some appropriate scalar products. From the latter, we deduce the orthonormality relations satisfied by the q-Vilenkin functions.

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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