矩形实、复和四元数Ginibre矩阵乘积的李雅普诺夫指数
Lyapunov exponents for products of rectangular real, complex and quaternionic Ginibre matrices
摘要:
我们研究了独立矩形实吉尼布尔矩阵、复吉尼布尔矩阵和四元数吉尼布尔矩阵乘积的特征值的联合密度。在矩阵的数量趋于无穷大的限制,它表明,联合概率密度函数的特征值形成一个永久点过程的所有三类。本征值的模变得不相关和对数正态分布,而本征值的相位的分布取决于是否考虑实数、复数或四元数Ginibre矩阵。在实矩阵乘积的推导中,我们明确地使用了当矩阵的个数趋于无穷大时所有特征值变为实的事实。最后,我们比较我们的结果与已知的结果的李雅普诺夫指数以及数值模拟。
英文摘要:
We study the joint density of eigenvalues for products of independent rectangular real, complex and quaternionic Ginibre matrices. In the limit where the number of matrices tends to infinity, it is shown that the joint probability density function for the eigenvalues forms a permanental point process for all three classes. The moduli of the eigenvalues become uncorrelated and log-normal distributed, while the distribution for the phases of the eigenvalues depends on whether real, complex or quaternionic Ginibre matrices are considered. In the derivation for a product of real matrices, we explicitly use the fact that all eigenvalues become real when the number of matrices tends to infinity. Finally, we compare our results with known results for the Lyapunov exponents as well as numerical simulations.
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