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Sebastián Gonçalves

Faculty Title

Professor Titular

ResearchGate profile

Short Bio

I was born in Buenos Aires, Argentina, and obtained my Ph.D. in Physics at the Universidad de Buenos Aires in 1992, researching at the Comision Nacional de Energía Atómica.  Then I moved to Porto Alegre, Brazil, as a Postdoc at the Instituto de Física of the Universidade Federal do Rio Grande do Sul, where I became Professor in 1997. Before that I spend one year and a half  in Santiago, Chile, as a researcher at the Facultad de Física of the Pontificia Universidad Católica. I have ongoing collaborations with the Statistical and Interdisciplinary Physics Group of the Centro Atómico Bariloche in Argentina, with the University of New Mexico, and with the URPP Social Network of the University of Zurich.

I have worked in condensed matter: magnetic foams, spinodal decomposition, and order-disorder transition. I am interest in the microscopic origin of friction. The preferred tools and methods of work are numerical simulations, like agent based models, Monte Carlo, and Molecular Dynamics techniques.

My present interest is in some problems in the so called "socio-physics" area, which is a wide subject under the huge umbrella of complex systems. Socio-physics means today the use and application of traditional model and tools of mechanical statistics to help understand the behavior of complex systems made of people. Critical behavior, phase transitions, and dynamical systems are some of the concepts used in socio-physics. Recent advances and ideas from network theory are used prominently too. Network robustness and crime, opinion and innovation dynamics, econophysics, and the spread of epidemics are some of my specific topics of research.

People I work(ed) with

Thiago Diaz
Gustavo Kohlrausch
Diego D. Lopes
Ervin K. Lenzi
Alvaro F. Martins
Quentin S. Hanley
Matjaž Perc
Haroldo V. Ribeiro
Teo Victor da Silva
Julian Neñer
Janaína Ruffoni
Carolina de Abreu
Flavio Iannelli
Albertine Weber
Ben-Hur Cardozo
Eder Schneider
Maria Lujan Iglesias
Bruno Requião da Cunha
Juan Carlos Gonzalez Avella
Roberto Da Silva
Mendelli Vainstein
Felipe Paula
Alexsandro Carvalho
Sergio Souza
Italo Gabriel Neide
Marcelo Ferreira da Costa Gomes
Mukesh Tiwari
Yping Ma
Sylvain Mignot
Jean-Pierre Nadal
Mirta Gordon
Gaspar Caon
M. Rodriguez Achach
R. Huerta-Quintanilla
Cristian Muorkazel
Evy Salcedo Torres
Claudio Scherer
Salete Pianegoda
José Luis Vega
Alan Bishop
Claudio Fusco
V. M. Kenkre
Guillermo Abramson
Oscar Nagel
Marcelo Kuperman
Sebastian Risau Gusmao
Fabiana Laguna
Fernanda Stedille
Israel Baumvol
Rita Maria Cunha de Almeida
Elisa Brod de Oliveira da Rosa
Leonardo Gregory Brunnet
Gerardo Martinez
Jose Roberto Iglesias
Migel Kiwi
Ricardo Ramirez
Hernan Bonadeo

Publications (since 2003)

Effectiveness of wealth-based vs exchange-based tax systems in reducing inequality
Thiago Dias, Sebastián Gonçalves
Physica A 641, 2024, 129721

Taxes, Inequality, and Equal Opportunities
José Roberto Iglesias, Ben-Hur Francisco Cardoso, Sebastián Gonçalves
Entropy 25, 9:1346 (2023)

Wealth distribution on a dynamic complex network
G Kohlrausch, S Gonçalves
arXiv preprint arXiv:2302.03677 (2023)

Bounded Confidence Opinion Dynamics with Asch-Like Social Conformity in Paradigmatic and Real Networks
TV da Silva, B Requião da Cunha, S Goncalves
Available at SSRN 4066973 (2022)

Deep Learning Criminal Networks
Haroldo V Ribeiro, Diego D Lopes, Arthur AB Pessa, Alvaro F Martins, Bruno R da Cunha, Sebastian Goncalves, Ervin K Lenzi, Quentin S Hanley, Matjaz Perc
Chaos, Solitons & Fractals 172, 113579 (2023)

Why equal opportunities lead to maximum inequality? The wealth condensation paradox generally solved.
BHF Cardoso, S Gonçalves, JR Iglesias
Chaos, Solitons & Fractals 168, 113181 (2023)

Machine learning partners in criminal networks
Diego D. Lopes, Bruno R. da Cunha, Alvaro F. Martins, Sebastián Gonçalves, Ervin K. Lenzi, Quentin S. Hanley, Matjaž Perc & Haroldo V. Ribeiro
Scientific Reports 12, 15746 (2022)

Universality of political corruption networks
Alvaro F. Martins, Bruno R. da Cunha, Quentin S. Hanley, Sebastián Gonçalves, Matjaž Perc, and Haroldo V. Ribeiro
Scientific Reports 12, 6858 (2022)

Study of taxes, regulations and inequality using machine learning algorithms
Julian Neñer, Ben-Hur Francisco Cardoso, María Fabiana Laguna, Sebastián Gonçalves, and José Roberto Iglesias
Phil. Trans. R. Soc. A 380: 20210165 (2022)

Epidemic oscillations: Interaction between delays and seasonality
G Abramson, MF da Costa Gomes, S Gonçalves
International Journal of Modern Physics B, 2240005 (2022)

Energy exchange calculations in a simple mechanical system to investigate the origin of friction
ML Iglesias, M Tiwari, VM Kenkre, S Gonçalves
International Journal of Modern Physics B, 2240004 (2021)

Wealth concentration in systems with unbiased binary exchanges
Ben-Hur Francisco Cardoso, José Roberto Iglesias, Sebastián Gonçalves
Physica A 579 (2021) 126123

Universal scaling law for human-to-human transmission diseases
Ben-Hur Francisco Cardoso, Sebastián Gonçalves
Europhysics Letters, 133 (2021) 58001

An analytical solution for the Kermack-McKendrick model
Alexsandro M. Carvalho, Sebastián Gonçalves
Physica A 566 (2021) 125659

Inequality, a scourge of the XXI century
José Roberto Iglesias, Ben-Hur Francisco Cardoso, Sebastián Gonçalves
Communications in Nonlinear Science and Numerical Simulation 95, (2021) 105646

Empirical determination of the optimal attack for fragmentation of modular networks
Carolina de Abreu, Sebastián Gonçalves, Bruno Requião da Cunha
Physica A 563, 125486 (2021)

Macroscopic and Microscopic Perspectives for Adoption of Technologies in the USA
Alexsandro M. Carvalho, Sebastián Gonçalves, Janaína Ruffoni, José Roberto Iglesias
PLoS ONE 15(12): e0242676

Universal scaling law for COVID-19 propagation in urban centers
Ben-Hur Francisco Cardoso and Sebastián Gonçalves
medRxiv (2020)

Trend analysis of the COVID-19 pandemic in China and the rest of the world
Albertine Weber, Flavio Iannelli, Sebastian Gonçalves
medRxiv (2020)

Wealth distribution models with regulations: Dynamics and equilibria
BHF Cardoso, S Gonçalves, JR Iglesias
Physica A 551, 124201 (2020)

Irrational behavior in the adoption of innovations
MF Laguna, JR Iglesias, S Gonçalves
Physica A 535, 122388 (2019)

Dynamic Modular Networks Model Mediated by Confinement
Éder Mílton Schneider, Sebastián Gonçalves, José Roberto Iglesias and Bruno Requião da Cunha
Appl Netw Sci 4:30 (2019)

Sliding and dry friction: Prandtl-Tomlinson athermal model revisited
Maria Lujan Iglesias and Sebastián Gonçalves
Brazilian Journal of Physics 48:585–591 (2018)

Topology, robustness, and structural controllability of the Brazilian Federal Police criminal intelligence network
Bruno Requião da Cunha and Sebastián Gonçalves
Applied Network Science 3 (1), 36 (2018)

Adoption of innovations with contrarian agents and repentance
MB Gordon, MF Laguna, S Gonçalves and JR Iglesias
Physica A: Statistical Mechanics and its Applications 486, 192-205 (2017)

Performance of attack strategies on modular networks
Bruno Requião da Cunha and Sebastián Gonçalves
Journal of Complex Networks 5 (6), 913-923 (2017)

Key factors in disease spreading: Spatial heterogeneity, time dependence, and human behavior:
Comment on "Pattern transitions in spatial epidemics: Mechanisms and emergent properties"

S Gonçalves
Physics of life reviews 19, 79 (2016)

Fast Fragmentation of Networks using Module-Based Attacks
Bruno Requião da Cunha, Juan Carlos Gonzalez Avella and Sebastián Gonçalves
PLoS ONE 10(11): e0142824 (2015)

Anomalous diffusion in the evolution of soccer championship scores: Real data, mean-field analysis, and an agent-based model
R. Da Silva, M. H. Vainstein, S. Gonçalves and F. S. F. Paula
Phys. Rev. E 88, 022136 (2013).

Epidemics Scenarios in the "Romantic Network"
Alexsandro M. Carvalho and Sebastián Gonçalves
PLoS ONE 7(11): e49009 (2012)

Why, when, and how fast innovations are adopted
S. Gonçalves, M.F. Laguna and J.R. Iglesias
The European Physical Journal B 85, 192 (2012)

Dynamical model for competing opinions
S. R. Souza and S. Gonçalves
Physical Review E 85, 056103 (2012)

Oscillations in SIRS model with distributed delays
S. Gonçalves, G. Abramson and MFC Gomes
The European Physical Journal B 81, 363–371 (2011)

Effects of rotation on the nonlinear friction of a damped dimer sliding on a periodic substrate
I. G. Neide, V. M. Kenkre and S. Gonçalves
Physical Review E 82, 046601 (2010)

Cycles of cooperation and free-riding in social systems
Yiping Ma, Sebastián Gonçalves, Sylvain Mignot, Jean-Pierre Nadal and Mirta B. Gordon
The European Physical Journal B 71, 597-610 (2009)

SIR model with general distribution function in the infectious period
Gomes M. F. da Costa and S. Gonçalves
Physica A 388, 3133-3142 (2009)

Generalization of a nonlinear friction relation for a dimer sliding on a periodic substrate
M. Tiwari, S. Gonçalves and V. M. Kenkre
The European Physical Journal B, 62(4) 459-464 (2008)

The unfair consequences of equal opportunities:
comparing exchange models of wealth distribution

G. M. Caon, S. Gonçalves and J.R. Iglesias
The European Physical Journal Special Topics, 143, 69-74 (2007)

Wealth condensation in a multiplicative random asset exchange model
Cristian Mourkazel, S. Gonçalves, J.R. Iglesias, M. Rodriguez Achach and R. Huerta-Quintanilla
The European Physical Journal Special Topics, 143, 75-79 (2007)

The SIR model with general distribution function in the infection period for epidemic dynamic
M. F. da Costa Gomes and S. Gonçalves
Actas de la Academia Nacional de Ciencias, XIII, Biomat, 153 (2007)

Reply to Comment on ``Dynamical of Thermal Growth of Silicon Oxide Films on Si''
R. M. C. de Almeida, S. Gonçalves, I. J. R. Baumvol and F. C. Stedile
Physical Review B 74, 127302 (2006)

Nanoscale sliding friction versus commensuration ratio: Molecular dynamics simulations
S. Gonçalves, E. S. Torres, C. Scherer and M. Kiwi
Physical Review B 73, 35434 (2006)

Bistability and hysteresis in the sliding friction of a dimer
S. Gonçalves, C. Fusco, A.R. Bishop and V.M. Kenkre
Physical Review B 72, 195418 (2005)

Dynamics of opinion in hierarchical organizations
M. F. Laguna, S. R. Gusman, G. Abramson, S. Gonçalves and J. R. Iglesias
Physica A 351, 580 (2005)

Nonlinear friction of a damped dimer sliding on a periodic substrate
S. Gonçalves, V.M. Kenkre, and A.R. Bishop
Physical Review B 70, 195415 (2004)

A Social Model for the Evolution of Sexual Transmitted Diseases
S. Gonçalves, M. Kuperman and M. F. da Costa Gomes
Physica A 342, 256 (2004)

Correlation between risk aversion and wealth distribution
J. R. Iglesias, S. Gonçalves, G. Abramson and J. L. Vega
Physica A 342, 186 (2004)

Promiscuity and the evolution of the sexually transmitted diseases
S. Gonçalves, M. Kuperman and M. F. da Costa Gomes
Physica A 327, 6 (2003)

The social behaviour and the evolution of sexually transmitted diseases
S. Gonçalves and M. Kuperman
Physica A 328, 225 (2003)

Wealth redistribution in our small world
J. R. Iglesias, S. Gonçalves, S. Pianegoda, J. L. Vega and G. Abramson
Physica A 327, 12 (2003)