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arXiv 1301.2116math-phmath.CAmath.MP
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非交换Painleve方程与Hermite型矩阵正交多项式

Non-commutative Painleve' equations and Hermite-type matrix orthogonal polynomials

Mattia Cafasso, Manuel D. de la Iglesia

摘要:

我们研究了与两个Hermite型矩阵正交多项式的例子相关的Christoffel-Darboux核的二重积分表示。我们表明,与这些内核连接的Fredholm行列式相关的通过Its-Izergin-Korepin-Slavnov(IIKS)理论与一定的黎曼-希尔伯特问题。使用这个黎曼-希尔伯特问题,我们得到一个拉克斯对的兼容性条件导致每个家庭的Painleve' IV微分方程的非交换版本。

英文摘要:

We study double integral representations of Christoffel-Darboux kernels associated with two examples of Hermite-type matrix orthogonal polynomials. We show that the Fredholm determinants connected with these kernels are related through the Its-Izergin-Korepin-Slavnov (IIKS) theory with a certain Riemann-Hilbert problem. Using this Riemann-Hilbert problem we obtain a Lax pair whose compatibility conditions lead to a non-commutative version of the Painleve' IV differential equation for each family.

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