260 citations · 3k across the 65 of their papers we have counts for
5 papers · 1 filter
Chaotic Systems with Absorption
Eduardo G. Altmann, Jefferson S. E. Portela, Tamás Tél
Motivated by applications in optics and acoustics we develop a dynamical-system approach to describe absorption in chaotic systems. We introduce an operator formalism from which we…
Optimal noise maximizes collective motion in heterogeneous media
Oleksandr Chepizhko, Eduardo G. Altmann, Fernando Peruani
We study the effect of spatial heterogeneity on the collective motion of self-propelled particles (SPPs). The heterogeneity is modeled as a random distribution of either static or…
Probing the statistical properties of unknown texts: application to the Voynich Manuscript
Diego R. Amancio, Eduardo G. Altmann, Diego Rybski +2
While the use of statistical physics methods to analyze large corpora has been useful to unveil many patterns in texts, no comprehensive investigation has been performed investigat…
Identifying trends in word frequency dynamics
Eduardo G. Altmann, Zakary L. Whichard, Adilson E. Motter
The word-stock of a language is a complex dynamical system in which words can be created, evolve, and become extinct. Even more dynamic are the short-term fluctuations in word usag…
Monte Carlo Sampling in Fractal Landscapes
Jorge C. Leitão, João M. Viana Parente Lopes, Eduardo G. Altmann
We propose a flat-histogram Monte Carlo method to efficiently sample fractal landscapes such as escape time functions of open chaotic systems. This is achieved by using a random-wa…