Asymptotic Eigenvalue Distributions of Block-Transposed Wishart Matrices
Asymptotic Eigenvalue Distributions of Block-Transposed Wishart Matrices
复制标题
块转置 Wishart 矩阵的渐近特征值分布
DOI:
10.1007/s10959-012-0409-4
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发表时间:
2011
影响因子:
0.8
通讯作者:
I. Nechita
中科院分区:
文献类型:
--
作者:
T. Banica;I. Nechita
We study the partial transposition WΓ=(id⊗t)W∈Mdn(ℂ) of a Wishart matrix W∈Mdn(ℂ) of parameters (dn,dm). Our main result is that, with d→∞, the law of mWΓ is a free difference of free Poisson laws of parameters m(n±1)/2. Motivated by questions in quantum information theory, we also derive necessary and sufficient conditions for these measures to be supported on the positive half-line.