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arXiv 2104.02584math-phcond-mat.dis-nncond-mat.stat-mechmath.MPmath.PR
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大型实非对称随机矩阵的实谱

Real spectra of large real asymmetric random matrices

Wojciech Tarnowski

摘要:

当在实矩阵元素的水平上引入随机性时,取决于其特定的实现,一对特征值可以表现为实数或形成复共轭对。我们表明,在大矩阵大小的限制,这样的实特征值的密度是成比例的平方根的复特征值的渐近密度的实线延续。这种关系允许一个计算真正的密度到一个归一化常数,然后应用到各种例子,包括重尾合奏和稀疏随机正则图的邻接矩阵。

英文摘要:

When a randomness is introduced at the level of real matrix elements, depending on its particular realization, a pair of eigenvalues can appear as real or form a complex conjugate pair. We show that in the limit of large matrix size the density of such real eigenvalues is proportional to the square root of the asymptotic density of complex eigenvalues continuated to the real line. This relation allows one to calculate the real densities up to a normalization constant, which is then applied to various examples, including heavy-tailed ensembles and adjacency matrices of sparse random regular graphs.

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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