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Dive into the research topics where C. Argolo is active.

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Featured researches published by C. Argolo.


International Journal of Bifurcation and Chaos | 2010

CRITICAL BEHAVIOR AND THRESHOLD OF COEXISTENCE OF A PREDATOR–PREY STOCHASTIC MODEL IN A 2D LATTICE

C. Argolo; H. Otaviano; Iram Gleria; Everaldo Arashiro; Tânia Tomé

We investigate the critical behavior of a stochastic lattice model describing a predator–prey system. By means of Monte Carlo procedure we simulate the model defined on a regular square lattice and determine the threshold of species coexistence, that is, the critical phase boundaries related to the transition between an active state, where both species coexist and an absorbing state where one of the species is extinct. A finite size scaling analysis is employed to determine the order parameter, order parameter fluctuations, correlation length and the critical exponents. Our numerical results for the critical exponents agree with those of the directed percolation universality class. We also check the validity of the hyperscaling relation and present the data collapse curves.


Journal of Statistical Mechanics: Theory and Experiment | 2016

Continuously varying critical order-parameter fluctuations in a parity conserving absorbing-state transition with long-range diffusion

T Laise; P Barros; C. Argolo; M. L. Lyra

We study the critical order parameter fluctuations of the absorbing-state phase-transition exhibited by branching and annihilating random walkers performing anomalous diffusion in a linear chain. The diffusion process is considered to follow a power-law distribution of jump lengths with a typical decay exponent α. We focus in the case of parity conserving dynamics for which deviations from the usual directed percolation universality class have been previously demonstrated even for the limiting cases of normal diffusion. Anomalous diffusion induces a continuous change of the critical exponents. By performing a finite-size scaling analysis of simulation data, we show that the critical order parameter moment ratio also varies continuously with α. We unveil that the critical order parameter distribution evolves from a nearly Gaussian to an exponential form as the range of the jump distribution is increased up to the limit on which the active state predominates for any finite branching probability.


Journal of Statistical Mechanics: Theory and Experiment | 2016

Threshold of coexistence and critical behavior of a predator-prey stochastic model in a fractal landscape

C. Argolo; P. Barros; Tânia Tomé; E Arashiro; Iram Gleria; M. L. Lyra

We investigate a stochastic lattice model describing a predator-prey system in a fractal scale-free landscape, mimicked by the fractal Sierpinski carpet. We determine the threshold of species coexistence, that is, the critical phase boundary related to the transition between an active state, where both species coexist and an absorbing state where one of the species is extinct. We show that the predators must live longer in order to persist in a fractal habitat. We further performed a finite-size scaling analysis in the vicinity of the absorbing-state phase transition to compute a set of stationary and dynamical critical exponents. Our results indicate that the transition belongs to the directed percolation universality class exhibited by the usual contact process model on the same fractal landscape.


Journal of Statistical Mechanics: Theory and Experiment | 2015

Critical behavior of the absorbing transition of branching and annihilating bosonic random walkers

C. Argolo; Pedro H Barros; Iram Gleria; Fabiana Carvalho dos Anjos; M. L. Lyra

In this work, we investigate the critical behavior of a model describing the parity-conserving branching and annihilating process of random walkers. The model is simulated on a one dimensional lattice on which the sites can be occupied by multiple particles with a finite annhilation probability. We determine the threshold of the phase transition between the statistically stationary active state and the absorbing state. From steady-state simulations and a finite-size scaling analysis, we calculate the order-parameter, order-parameter fluctuations, and spacial correlation length critical exponents. Further, we follow the short-time critical relaxation to provide a set of relevant dynamical critical exponents. We check the validity of the hyperscaling relation for both sets of stationary and dynamical critical exponents. These are consistent with the BARW-PC universality class.


Physical Review E | 2009

Universality classes of the absorbing state transition in a system with interacting static and diffusive populations

C. Argolo; Yan Quintino; Y. Siqueira; Iram Gleria; M. L. Lyra


Physical Review E | 2013

Vanishing order-parameter critical fluctuations of an absorbing-state transition driven by long-range interactions

C. Argolo; Yan Quintino; Pedro H. Barros; M. L. Lyra


Physical Review E | 2012

Critical short-time dynamics in a system with interacting static and diffusive populations.

C. Argolo; Yan Quintino; Iram Gleria; M. L. Lyra


Physica A-statistical Mechanics and Its Applications | 2011

Finite-size scaling analysis of the critical behavior of a general epidemic process in 2D

C. Argolo; Yan Quintino; Iram Gleria; M. L. Lyra


Physica A-statistical Mechanics and Its Applications | 2007

Critical behavior of a two-species reaction–diffusion problem in 2D

D. Bertrand; Y. Siqueira; M. L. Lyra; Iram Gleria; C. Argolo


Physica A-statistical Mechanics and Its Applications | 2018

Critical spreading dynamics of parity-conserving annihilating random walks with power-law branching

T. Laise; F.C. dos Anjos; C. Argolo; M. L. Lyra

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M. L. Lyra

Federal University of Alagoas

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Iram Gleria

Federal University of Alagoas

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Tânia Tomé

University of São Paulo

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Y. Siqueira

Federal University of Alagoas

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E Arashiro

Universidade Federal do Rio Grande do Sul

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P Barros

Federal University of Alagoas

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T Laise

Federal University of Alagoas

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