Non-Hermitean Random Matrix Theory: method of hermitization

Details Non-Hermitean Random Matrix Theory: method of hermitization Non-Hermitean Random Matrix Theory: method of hermitization

1997-03-10

arxiv.org/abs/cond-mat/9703087v1

Nucl.Phys. B504 (1997) 579-608

Physics

Condensed Matter

46 pages, 3 ps figures, LaTex

Scientific paper

10.1016/S0550-3213(97)00502-6

We consider random non-hermitean matrices in the large $N$ limit. The power of analytic function theory cannot be brought to bear directly to analyze non-hermitean random matrices, in contrast to hermitean random matrices. To overcome this difficulty, we show that associated to each ensemble of non-hermitean matrices there is an auxiliary ensemble of random hermitean matrices which can be analyzed by the usual methods. We then extract the Green's function and the density of eigenvalues of the non-hermitean ensemble from those of the auxiliary ensemble. We apply this "method of hermitization" to several examples, and discuss a number of related issues.

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