4 papers
Varying critical percolation exponents on a multifractal support
J. E. Freitas, G. Corso, L. S. Lucena
We study percolation as a critical phenomenon on a multifractal support. The scaling exponents of the the infinite cluster size ( exponent) and the fractal dimension of the perc…
Entropy Analysis of Stochastic Processes at Finite Resolution
D. M. Tavares, L. S. Lucena
The time evolution of complex systems usually can be described through stochastic processes. These processes are measured at finite resolution, what necessarily reduces them to fin…
Power-law temporal auto-correlations in day-long records of human physical activity and their alteration with disease
Luis A. Nunes Amaral, Danyel J. Bezerra Soares, Luciano R. da Silva +5
We investigate long-duration time series of human physical activity under three different conditions: healthy individuals in (i) a constant routine protocol and (ii) in regular dai…
The Strange Behavior of Critical Branched Polymers
H. H. Aragao-Rego, J. E. de Freitas, Liacir S. Lucena +1
We find that 2-dimensional (2-D) critical branched polymers with no impurities conclusively belong to the same universality class as 2-D random percolation clusters, although pure…