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arXiv 1802.01153math-phmath.MP
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复平面上正交多项式的Painlevé IV临界渐近性

Painlevé IV Critical Asymptotics for Orthogonal Polynomials in the Complex Plane

Marco Bertola, José Gustavo Elias Rebelo, Tamara Grava

摘要:

本文研究了复平面上正交多项式在某个正规矩阵模型下的渐近性态。该模型依赖于一个参数和渐近分布的特征值经历了一个过渡的参数,在那里它开发了一个角落型奇点。在双标度极限附近的过渡,我们确定的正交多项式的Painlevé IV方程的解的渐近行为。我们确定的Fredholm行列式与这样的解决方案,我们计算它的数值上的真正的线,还表明,相应的Painlevé超越是极自由的半轴。

英文摘要:

We study the asymptotic behaviour of orthogonal polynomials in the complex plane that are associated to a certain normal matrix model. The model depends on a parameter and the asymptotic distribution of the eigenvalues undergoes a transition for a special value of the parameter, where it develops a corner-type singularity. In the double scaling limit near the transition we determine the asymptotic behaviour of the orthogonal polynomials in terms of a solution of the Painlevé IV equation. We determine the Fredholm determinant associated to such solution and we compute it numerically on the real line, showing also that the corresponding Painlevé transcendent is pole-free on a semiaxis.

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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