Large-$N$ Eigenvalue Distribution of Randomly Perturbed Asymmetric Matrices

Details Large-$N$ Eigenvalue Distribution of Randomly Perturbed Asymmetric Matrices Large-$N$ Eigenvalue Distribution of Randomly Perturbed Asymmetric Matrices

1996-06-24

arxiv.org/abs/cond-mat/9606175v1

Journ Phys A: Math and Gen vol 29 (1996) L165

Physics

Condensed Matter

10 pages, LaTeX2e, 1 eps figure

Scientific paper

10.1088/0305-4470/29/7/003

The density of complex eigenvalues of random asymmetric $N\times N$ matrices is found in the large-$N$ limit. The matrices are of the form $H_0+A$ where $A$ is a matrix of $N^2$ independent, identically distributed random variables with zero mean and variance $N^{-1}v^2$. The limiting density $\rho (z,z^*)$ is bounded. The area of the support of $\rho (z,z^*)$ cannot be less than $\pi v^2$. In the case of $H_0$ commuting with its conjugate, $\rho (z,z^*)$ is expressed in terms of the eigenvalue distribution of the non-perturbed part $H_0$.

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