Real symmetric random matrices and paths counting

Details Real symmetric random matrices and paths counting Real symmetric random matrices and paths counting

2004-12-09

arxiv.org/abs/cond-mat/0412223v2

Phys. Rev. E 72, 026122 (2005)

Physics

Condensed Matter

Statistical Mechanics

23 pages, 10 figures, revised paper

Scientific paper

10.1103/PhysRevE.72.026122

Exact evaluation of $<{\rm Tr} S^p>$ is here performed for real symmetric matrices $S$ of arbitrary order $n$, up to some integer $p$, where the matrix entries are independent identically distributed random variables, with an arbitrary probability distribution. These expectations are polynomials in the moments of the matrix entries ; they provide useful information on the spectral density of the ensemble in the large $n$ limit. They also are a straightforward tool to examine a variety of rescalings of the entries in the large $n$ limit.

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