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Sebastián Gonçalves

Faculty Title

Professor Associado IV

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, and I still collaborate with people of that institution. I have collaboration too with the group of Statistical Physics of the Centro Atómico Bariloche in Argentina, and with the Consortium of Americas for Interdisciplinary Science of the University of New Mexico, and with the Theoretical Division of LANL, in USA.

My present interest is in microscopic origin of friction, networks and the spread of epidemics, and social complex phenomena including opinion, traffic, and econophysics. In the past I have worked in condensed matter: magnetic foams, spinodal decomposition and order-disorder transition.

People I work(ed) with

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
S. Pianegoda
J. L. Vega
Alan R. 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
Leonardo Gregory Brunnet
Gerardo Martinez
Jose Roberto Iglesias
Migel Kiwi
Ricardo Ramirez
Hernan Bonadeo

Publications (last ten years)

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)
http://doi:10.1140/epjb/e2011-20054-9

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)
http://doi/10.1103/PhysRevE.82.046601

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)

Modeling two-dimensional magnetic domain patterns
J. R. Iglesias, S. Gonçalves, O. A. Nagel, and M. Kiwi
Physical Review B 65, 064447 (2002)