[PDF] Top 20 Braz. J. Phys. vol.39 número2A

... The VII International Conference on Nonextensive Statistical Mechanics – Foundations and Applications was held in Foz do Iguac¸u, Paran´a, Brazil, from 27 to 31 October 2008.. In its sev[r] ... See full document

... malized. Note that solutions for this equation are obtained by taking a general initial condition into account, in contrast to the cases worked out, for example, in [39–42] which con- sider particular forms for ... See full document

... Therefore, the power-law distribution (3) for α > 0 as a re- sult of introduction along with the superstatistical scheme of the second stochastic (non-homogeneous Poisson) pro- cess, according to Eqs. (17) and (18), ... See full document

... Statistical mechanics constitutes one of the pillars of contemporary physics. Recognized as such — together with mechanics (classical, quantum, relativistic), electromagnetism and thermodynamics —, it is one of the ... See full document

... relevant phys- ical quantity is varied (represented by a parameter in the sys- tem’s Hamiltonian) it is possible to induce a phase transi- tion into a different phase of ... See full document

... q-exponential distributions have also been applied in the empirical study of stock markets[39–42], DNA sequences[43], family names[44], human behavior[45–47], geomagnetic records[48, 49], train delays[50], ... See full document

... The purpose of the present work is to derive a NFPE in the picture of a generalized statistical mechanics based on the STM-entropy and to study its classical Lie symmetries and the relat[r] ... See full document

... Many systems have been investigated by using this ap- proach, e.g., long-range Hamiltonian systems like the HMF model [18], the generalized Lennard-Jonnes gas [19], self- gravitating sys[r] ... See full document

... We also applied gradient descent with adaptive learning rate with (TRAINGDX) or without momentum (TRAINGDA). Nev- ertheless, by applying all these algorithms there is no guar- antee that[r] ... See full document

... The complex network topologies which result from the self-organizing processes, based on biological mechanisms, which we have proposed, have properties that are common features of many b[r] ... See full document

... In order to correctly define such a point, we work beyond the Zipf law, defining other probability distribution that takes the frequency of repetition of a particular word among other di[r] ... See full document

... A: Math. Gen. 35, 10311 (2002); W.J. Munro, D.F.V. James, A.G. White, and P.G. Kwiat, Phys. Rev. A 64, 0303202 (2003). [31] A.R. Plastino and A. Plastino, Phys. Rev. E 54, 4423 (1996). [32] A. Plastino, ... See full document

... (9) The first contribution comes from the kinetic term present in Eq. It is reduced to the contribution of an ideal Bose gas when the kinetic energy term is the usual one, i.e., for α = [r] ... See full document

... lights how the scientific research activity changes with time. It is remarkable how effective temperature is as a reliable per- formance metric for the research activity in Brazil. This part of the analysis uses the ... See full document

... In this manuscript we give thought to the aftermath on the stable probability density function when standard multiplicative cascades are generalised cascades based on the q -product of B[r] ... See full document

... stands for the corresponding phase space volume element and q is the deformation parameter. The four-vector N µ = (n, j) represents the probability density n = n(x) (which is normal- ized to unity) and the ... See full document

... a q -exponential behavior occurs in parallel with a structural modification in water, where the probability of occurrence of four hydrogen bonds outnumbers the one of two hydrogen bonds.[r] ... See full document

... in the study of fractals, hyperbolic geometry, chaotic dynam- ical systems, quantum groups, etc. There are also many phys- ical applications, for instance, in exact models in statistical mechanics. It is ... See full document

... Most importantly, one can generalize to general proba- bility densities f ( β ) and general Hamiltonians. In all cases one obtains a superposition of two different statistics: that of β [r] ... See full document

... As an essential component in the demonstration of an atypical, q -deformed, statistical mechanical structure in the dynamics of the Feigenbaum attractor we expose, at a previously unknow[r] ... See full document