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期刊论文
Fractal analysis of wave functions at the localization-delocalization transition in a disordered quantum small-world-network model
PHYSICAL REVIEW B, VOLUME 63, 193405,-0001,():
Localization-delocalization transition in disordered quantum small-world network model is confirmed by using the numerical multifractal analysis of the wave functions at the critical point. A linear relation between the numerator and the denominator of the parametric representation for the singularity spectrum of the wave functions near the transition point is obtained, serving as a criterion of the critical behavior. The singularity spectrum f (α) at the critical point is size independent. The variation of the fractal intensityαq at q50 and q51 in changing the rewiring probability p reveals the phase transition as shown in the level statistics on the same model.
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