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arXiv 1306.4256math-phmath.MP
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多元Krawtchouk多项式作为振子态旋转群表示的矩阵元

The multivariate Krawtchouk polynomials as matrix elements of the rotation group representations on oscillator states

Vincent X. Genest, Luc Vinet, Alexei Zhedanov

摘要:

在三维各向同性谐振子模型的框架下,给出了二元Krawtchouk多项式的代数解释。这些多项式在两个离散变量中出现的酉可约表示的旋转组在3维的矩阵元素。它们的许多性质都是通过利用群论的设置推导出来的。双变量的特拉特尼克多项式的Krawtchouk型被看作是特殊情况下的一般多项式,对应于特定的旋转只涉及两个参数。它解释了如何自然地推广到(d+1)维的方法,并允许解释多元Krawtchouk多项式的SO(d+1)酉表示的矩阵元素。这些多项式与其他代数模型的连接指示。

英文摘要:

An algebraic interpretation of the bivariate Krawtchouk polynomials is provided in the framework of the 3-dimensional isotropic harmonic oscillator model. These polynomials in two discrete variables are shown to arise as matrix elements of unitary reducible representations of the rotation group in 3 dimensions. Many of their properties are derived by exploiting the group-theoretic setting. The bivariate Tratnik polynomials of Krawtchouk type are seen to be special cases of the general polynomials that correspond to particular rotations involving only two parameters. It is explained how the approach generalizes naturally to (d+1) dimensions and allows to interpret multivariate Krawtchouk polynomials as matrix elements of SO(d+1) unitary representations. Indications are given on the connection with other algebraic models for these polynomials.

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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