arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2201.11836math-phcond-mat.dis-nnmath.MPmath.PR
收藏

不变随机矩阵和或积的上特征值的右大偏差原理

Right large deviation principle for the top eigenvalue of the sum or product of invariant random matrices

Pierre Mergny, Marc Potters

摘要:

本文研究两个随机矩阵$\mathbf{A}$和$\mathbf{B}$的和或积的上特征值(或奇异值)在维数趋于无穷大时的右大偏差.假设矩阵$\mathbf{A}$和$\mathbf{B}$各自取自具有约束势的不变(或双不变)系综,该约束势具有可能的\emph{wall},超过该约束势不允许有特征值/奇异值。这堵墙的引入将不同的模型放在一个非常通用的框架中。特别是,从大偏差的观点来看,壁正好在极限谱密度的右边的情况,与考虑固定的对角矩阵的情况是等价的,正如前面在参考文献\cite{GuionnetMaida20}中所研究的那样。我们表明,在参考文献\cite{GuionnetMaida20}中引入的倾斜方法可以扩展到我们的一般设置,是等效的球形自旋玻璃模型的研究特定的操作-对称矩阵/对称矩阵的产品/矩形矩阵的总和-我们正在考虑。

英文摘要:

In this note we study the right large deviation of the top eigenvalue (or singular value) of the sum or product of two random matrices $\mathbf{A}$ and $\mathbf{B}$ as their dimensions goes to infinity. The matrices $\mathbf{A}$ and $\mathbf{B}$ are each assumed to be taken from an invariant (or bi-invariant) ensemble with a confining potential with a possible \emph{wall} beyond which no eigenvalues/singular values are allowed. The introduction of this wall puts different models in a very generic framework. In particular, the case where the wall is exactly at the right edge of the limiting spectral density is equivalent, from the point of view of large deviations, to considering a fixed diagonal matrices, as studied previously in Ref. \cite{GuionnetMaida20}. We show that that the tilting method introduced in Ref. \cite{GuionnetMaida20} can be extended to our general setting and is equivalent to the study of a spherical spin glass model specific to the operation - sum of symmetric matrices / product of symmetric matrices / sum of rectangular matrices - we are considering.

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。

↑