Fig. 6: Fat-tail and thin-tail distributions emerging from the hybrid comb model.
From: Interplay between particle trapping and heterogeneity in anomalous diffusion
Relationship between the kurtosis κx of the distributions of rescaled positions ξx and the diffusion coefficient exponent η. The circles represent the average kurtosis of the distributions of ξx obtained from our simulations for t exceeding 103 (to avoid the transient behavior observed in Fig. 3). Additionally, the gray shaded band indicates the standard deviation of κx. The vertical solid line at η = −1 marks the boundary between superdiffusion (blue background) and subdiffusion (red background), while the horizontal dashed line indicates the Gaussian kurtosis (κx = 3) that separates fat-tailed distributions (κx > 3, background with vertical stripes) from thin-tailed distributions (κx < 3, background with horizontal stripes).
