Eliseu Venites Filho

• Federal University of Rio Grande do Sul

The contact process is a nonequilibrium Hamiltonian model that, even in one dimension, lacks an exact solution and has been extensively studied via Monte Carlo simulations, both in steady-state and time-dependent scenarios. Although the effects of particle mobility and diffusion on criticality have been preliminarily explored, they remain poorly un...

The contact process is a non-equilibrium Hamiltonian model that, even in one dimension, lacks an exact solution and has been extensively studied via Monte Carlo simulations, both in steady-state and time-dependent scenarios. Although the effects of particle mobility/diffusion on criticality have been preliminarily investigated, they remain incomple...

Our study emphasizes the efficacy of employing matrices resembling Wishart matrices, derived from magnetization time series data within specific dynamics, to elucidate phase transitions and critical phenomena in the Q-state Potts model. Through the application of appropriate statistical methods, we not only identify second-order transitions but als...

Random matrix theory, particularly using matrices akin to the Wishart ensemble, has proven successful in elucidating the thermodynamic characteristics of critical behavior in spin systems across varying interaction ranges. This paper explores the applicability of such methods in investigating critical phenomena and the crossover to tricritical poin...

How a system initially at infinite temperature responds when suddenly placed at finite temperatures is a way to check the existence of phase transitions. It has been shown in [R. da Silva, Int. J. Mod. Phys. C 34:2350061, 2023] that phase transitions are imprinted in the spectra of matrices built from time evolutions of magnetization of spin models...

How a system initially at infinite temperature responds when suddenly placed at finite temperatures is a way to check the existence of phase transitions. It has been shown in [R. da Silva, IJMPC 2023] that phase transitions are imprinted in the spectra of matrices built from time evolutions of magnetization of spin models. In this paper, we show th...

We show that the spectra of Wishart matrices built from magnetization time series can describe the phase transitions and the critical phenomena of the Potts model with a different number of states. We can statistically determine the transition points, independent of their order, by studying the density of the eigenvalues and corresponding fluctuati...

Metaheuristics, as the simulated annealing used in the optimization of disordered systems, goes beyond physics, and the travelling salesman is a paradigmatic NP-complete problem that allows to infer important theoretical properties of the algorithm in different random environments. Many versions of the algorithm are explored in the literature, but...

Metaheuristics, as the simulated annealing used in the optimization of disordered systems, goes beyond physics, and the travelling salesman is a paradigmatic NP-complete problem that allows to infer important theoretical properties of the algorithm in different random environments. Many versions of the algorithm are explored in the literature, but...