Large Deviations For Extreme Eigenvalues Of Deformed Wigner Random Matrices
ELECTRONIC JOURNAL OF PROBABILITY(2021)
摘要
We present a large deviation principle at speed N for the largest eigenvalue of some additively deformed Wigner matrices. In particular this includes Gaussian ensembles with full-rank general deformation. For the non-Gaussian ensembles, the deformation should be diagonal, and we assume that the laws of the entries have sharp sub-Gaussian Laplace transforms and satisfy certain concentration properties. For these latter ensembles we establish the large deviation principle in a restricted range (-infinity, x(c)), where x(c) depends on the deformation only and can be infinite.
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关键词
large deviations, extreme eigenvalues, random matrices, deformed Wigner matrices
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