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arXiv 1401.0780math.PRmath-phmath.MP
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从随机矩阵到长程相关

From random matrices to long range dependence

Arijit Chakrabarty, Rajat Subhra Hazra, Deepayan Sarkar

摘要:

研究了元素来自平稳高斯过程的随机矩阵。本征值的限制行为作为矩阵的大小走向无穷大是在这项工作中感兴趣的主要课题。证明了极限谱分布是由平稳过程谱测度的绝对连续分量决定的,这一现象类似于矩阵元素独立同分布的情形。另一方面,离散分量以完全不同的方式对本征值的限制行为做出贡献。因此,这有助于在随机矩阵的上下文中定义平稳高斯过程的短程依赖性和长程依赖性之间的边界。

英文摘要:

Random matrices whose entries come from a stationary Gaussian process are studied. The limiting behavior of the eigenvalues as the size of the matrix goes to infinity is the main subject of interest in this work. It is shown that the limiting spectral distribution is determined by the absolutely continuous component of the spectral measure of the stationary process, a phenomenon resembling that in the situation where the entries of the matrix are i.i.d. On the other hand, the discrete component contributes to the limiting behavior of the eigenvalues in a completely different way. Therefore, this helps to define a boundary between short and long range dependence of a stationary Gaussian process in the context of random matrices.

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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