Distribution of local density of states in superstatistical random matrix theory

Details Distribution of local density of states in superstatistical random matrix theory Distribution of local density of states in superstatistical random matrix theory

2007-02-16

arxiv.org/abs/cond-mat/0702395v1

Phys. Lett. A 366, 351 (2007)

Physics

Condensed Matter

Statistical Mechanics

13 pages, 3 figures

Scientific paper

10.1016/j.physleta.2007.02.055

We expose an interesting connection between the distribution of local spectral density of states arising in the theory of disordered systems and the notion of superstatistics introduced by Beck and Cohen and recently incorporated in random matrix theory. The latter represents the matrix-element joint probability density function as an average of the corresponding quantity in the standard random-matrix theory over a distribution of level densities. We show that this distribution is in reasonable agreement with the numerical calculation for a disordered wire, which suggests to use the results of theory of disordered conductors in estimating the parameter distribution of the superstatistical random-matrix ensemble.

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