813 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centro Brasileiro de Pesquisas FísicasBR57 papers
- Santa Fe InstituteUS33 papers
- Pontifícia Universidade Católica do Rio de JaneiroBR24 papers
- Universidade Federal FluminenseBR21 papers
- Universidade de São PauloBR20 papers
- Instituto de Física de São CarlosBR11 papers
- Universidade Federal de ViçosaBR11 papers
- Universidade Federal do Rio Grande do SulBR11 papers
- Consejo Nacional de Investigaciones Científicas y TécnicasAR8 papers
- Conselho Nacional de Desenvolvimento Científico e TecnológicoBR8 papers
- Universidade Estadual de MaringáBR8 papers
- Complexity Science HubAT7 papers
141 papers
Nonlinear redistribution of wealth from a stochastic approach
Hugo Lima, Allan R. Vieira, Celia Anteneodo
We investigate the effect of applying nonlinear redistributive taxes to the yard-sale dynamics of assets. An amount of money is collected from each individual (tax) and distributed…
Inequality, a scourge of the XXI century
José Roberto Iglesias, Ben-Hur Francisco Cardoso, Sebastián Gonçalves
Social and economic inequality is a plague of the XXI Century. It is continuously widening, as the wealth of a relatively small group increases and, therefore, the rest of the worl…
What is the potential for a second peak in the evolution of SARS-CoV-2 in emerging and developing economies? Insights from a SIRASD model considering the informal economy
Marcelo A. Pires, Nuno Crokidakis, Daniel O. Cajueiro +2
We study the potential scenarios from a Susceptible-Infected-Recovered-Asymptomatic-Symptomatic-Dead (SIRASD) model. As a novelty, we consider populations that differ in their degr…
Skepticism and rumor spreading: the role of spatial correlations
Marco Antonio Amaral, W. G. Dantas, Jeferson J. Arenzon
Critical thinking and skepticism are fundamental mechanisms that one may use to prevent the spreading of rumors, fake-news and misinformation. We consider a simple model in which a…
Barriers, trapping times and overlaps between local minima in the dynamics of the disordered Ising -spin Model
Daniel A. Stariolo, Leticia F. Cugliandolo
We study the low temperature out of equilibrium Monte Carlo dynamics of the disordered Ising -spin Model with and a small number of spin variables. We focus on sequences o…
Hysteresis and disorder-induced order in continuous kinetic-like opinion dynamics in complex networks
A. L. Oestereich, M. A. Pires, S. M. Duarte Queirós +1
In this work we tackle a kinetic-like model of opinions dynamics in a networked population endued with a quenched plurality and polarization. Additionally, we consider pairwise int…
Pair approximation for the noisy threshold -voter model
A. R. Vieira, Antonio F. Peralta, Raul Toral +2
In the standard -voter model, a given agent can change its opinion only if there is a full consensus of the opposite opinion within a group of influence of size . A more real…
Characterizing network topology using first-passage analysis
M. S. Chaves, T. G. Mattos, A. P. F. Atman
Understanding the topological characteristics of complex networks and how they affect navigability is one of the most important goals in science today, as it plays a central role i…
Imperfect bifurcations in opinion dynamics under external fields
Francisco Freitas, Allan R. Vieira, Celia Anteneodo
We investigate, through a kinetic-exchange model, the impact that an external field, like advertising and propaganda, has on opinion dynamics. We address the situations where two o…
A generalised model for asymptotically-scale-free geographical networks
Nicola Cinardi, Andrea Rapisarda, Constantino Tsallis
We consider a generalised d-dimensional model for asymptotically-scale-free geographical networks. Central to many networks of this kind, when considering their growth in time, is…
Dynamical robustness of discrete conservative systems: Harper and generalized standard maps
Ugur Tirnakli, Constantino Tsallis, Kivanc Cetin
In recent years, statistical characterization of the discrete conservative dynamical systems (more precisely, paradigmatic examples of area-preserving maps such as the standard and…
The Multiplex Efficiency Index: unveiling the Brazilian Air Transportation Multiplex Network -- BATMN
Izabela M. Oliveira, Laura C. Carpi, A. P. F. Atman
Modern society is increasingly massively connected, reflecting an omnipresent tendency to organize social, economic, and technological structures in complex networks. Recently, wit…
Quantum walks with sequential aperiodic jumps
Marcelo A. Pires, Sílvio M. Duarte Queirós
We analyze a set of discrete-time quantum walks for which the displacements on a chain follow binary aperiodic jumps according to three paradigmatic sequences: Fibonacci, Thue-Mors…
Dynamical correlations and pairwise theory for the symbiotic contact process on networks
Marcelo M. de Oliveira, Sidiney G. Alves, Silvio C. Ferreira
The two-species symbiotic contact process (2SCP) is a stochastic process where each vertex of a graph may be vacant or host at most one individual of each species. Vertices with bo…
Multiple transitions between normal and hyperballistic diffusion in quantum walks with time-dependent jumps
Marcelo A. Pires, Giuseppe Di Molfetta, Sílvio M. Duarte Queirós
We extend to the gamut of functional forms of the probability distribution of the time-dependent step-length a previous model dubbed Elephant Quantum Walk, which considers a unifor…
Memory and irreversibility on two-dimensional overdamped Brownian dynamics
Eduardo dos S. Nascimento, Welles A. M. Morgado
We consider the effects of memory on the stationary behavior of a two-dimensional Langevin dynamics in a confining potential. The system is treated in an overdamped approximation a…
Spectral properties and the accuracy of mean-field approaches for epidemics on correlated networks
Diogo H. Silva, Silvio C. Ferreira, Wesley Cota +2
We present a comparison between stochastic simulations and mean-field theories for the epidemic threshold of the susceptible-infected-susceptible (SIS) model on correlated networks…
Wealth Distribution Models with Regulations: Dynamics and Equilibria
Ben-Hur Francisco Cardoso, Sebastián Gonçalves, José Roberto Iglesias
Simple agent based exchange models are a commonplace in the study of wealth distribution in an artificial economy. Generally, in a system that is composed of many agents characteri…
Relaxation dynamics of the Ising -spin disordered model with finite number of variables
D. A. Stariolo, L. F. Cugliandolo
We study the dynamic and metastable properties of the fully connected Ising -spin model with finite number of variables. We define trapping energies, trapping times and self cor…
Order-disorder transition in a two-dimensional associating lattice gas
A. P. Furlan, Tiago J. Oliveira, Jürgen F. Stilck +1
We study an associating lattice gas (ALG) using Monte Carlo simulation and solutions on Husimi lattices. In this model, the molecules have an orientational degree of freedom and th…
Hamiltonian dynamics of the SIS epidemic model with stochastic fluctuations
Gilberto M. Nakamura, Alexandre S. Martinez
Empirical records of epidemics reveal that fluctuations are important factors for the spread and prevalence of infectious diseases. The exact manner in which fluctuations affect sp…
Quantifying echo chamber effects in information spreading over political communication networks
Wesley Cota, Silvio C. Ferreira, Romualdo Pastor-Satorras +1
Echo chambers in online social networks, in which users prefer to interact only with ideologically-aligned peers, are believed to facilitate misinformation spreading and contribute…
Local roughness exponent in the nonlinear molecular-beam-epitaxy universality class in one-dimension
Edwin E. Mozo Luis, Thiago A. de Assis, Silvio C. Ferreira +1
We report local roughness exponents, , for three interface growth models in one dimension which are believed to belong the non-linear molecular-beam-epitaxy (nMBE)…
Controlling optical memory effects in disordered media with coated metamaterials
Tiago J. Arruda, Alexandre S. Martinez, Felipe A. Pinheiro
Most applications of memory effects in disordered optical media, such as the tilt-tilt and shift-shift spatial correlations, have focused on imaging through and inside biological t…