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Distribution of local density of states in superstatistical random matrix theory
Faculty
Science
Year:
2007
Type of Publication:
Article
Pages:
351-356
Authors:
Abul-Magd, A. Y
DOI:
10.1016/j.physleta.2007.02.055
Journal:
PHYSICS LETTERS A ELSEVIER SCIENCE BV
Volume:
366
Research Area:
Physics
ISSN
ISI:000248252100011
Keywords :
Distribution , local density , states , superstatistical random
Abstract:
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. (C) 2007 Elsevier B.V. All rights reserved.
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