On the scaling of probability density functions with apparent power-law exponents less than unity

K. Christensen, Naser Farid (), G. Pruessner () and M. Stapleton

The European Physical Journal B: Condensed Matter and Complex Systems, 2008, vol. 62, issue 3, 331-336

Abstract: We derive general properties of the finite-size scaling of probability density functions and show that when the apparent exponent $\tilde{\tau}$ of a probability density is less than 1, the associated finite-size scaling ansatz has a scaling exponent τ equal to 1, provided that the fraction of events in the universal scaling part of the probability density function is non-vanishing in the thermodynamic limit. We find the general result that τ≥1 and $\tau \ge \tilde{\tau}$ . Moreover, we show that if the scaling function $\mathcal{G}(x)$ approaches a non-zero constant for small arguments, $\lim_{x \to 0} \mathcal{G}(x) > 0$ , then $\tau=\tilde{\tau}$ . However, if the scaling function vanishes for small arguments, $\lim_{x \to 0} \mathcal{G}(x)=0$ , then τ= 1, again assuming a non-vanishing fraction of universal events. Finally, we apply the formalism developed to examples from the literature, including some where misunderstandings of the theory of scaling have led to erroneous conclusions. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2008

Keywords: 89.75.Da Systems obeying scaling laws; 89.75.-k Complex systems; 05.65.+b Self-organized systems; 89.75.Hc Networks and genealogical trees; 05.70.Jk Critical point phenomena (search for similar items in EconPapers)
Date: 2008
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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DOI: 10.1140/epjb/e2008-00173-2

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