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arXiv math-ph/0312022math-phmath.MP
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随机非Hermitian Jacobi矩阵的无偏公式

Thouless formula for random non-Hermitian Jacobi matrices

Ilya Ya Goldsheid, Boris A Khoruzhenko

摘要:

考虑随机非厄米雅可比矩阵$J_n$的维数增加$n$。证明了$J_n$的归一化特征值计数测度弱收敛于极限测度$μ$为$n\to\infty$ .我们还扩展到非埃尔米特的情况下的无尾公式$μ$和与序列$J_n$相关的二阶差分方程的李雅普诺夫指数。测度$μ$被证明是log-Hölder连续的。

英文摘要:

Random non-Hermitian Jacobi matrices $J_n$ of increasing dimension $n$ are considered. We prove that the normalized eigenvalue counting measure of $J_n$ converges weakly to a limiting measure $μ$ as $n\to\infty$. We also extend to the non-Hermitian case the Thouless formula relating $μ$ and the Lyapunov exponent of the second-order difference equation associated with the sequence $J_n$. The measure $μ$ is shown to be log-Hölder continuous.

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