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$f(α)$ Multifractal spectrum at strong and weak disorder

E. Cuevas
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Abstract

The system size dependence of the multifractal spectrum $f(α)$ and its singularity strength $α$ is investigated numerically. We focus on one-dimensional (1D) and 2D disordered systems with long-range random hopping amplitudes in both the strong and the weak disorder regime. At the macroscopic limit, it is shown that $f(α)$ is parabolic in the weak disorder regime. In the case of strong disorder, on the other hand, $f(α)$ strongly deviates from parabolicity. Within our numerical uncertainties it has been found that all corrections to the parabolic form vanish at some finite value of the coupling strength.

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E. Cuevas. 2003-07-14. $f(α)$ Multifractal spectrum at strong and weak disorder. https://doi.org/10.1103/physrevb.68.024206

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