activity
20042025
most citedUniversality, Correlations, and Rankings in the Brazilian Universities National Admission Examinations

18 citations · 86 across the 16 of their papers we have counts for

collaborators

16 papers

cond-mat.stat-mech2025

Revisiting the Contact Model with Diffusion Beyond the Conventional Methods

Roberto da Silva, Eliseu Venites Filho, Henrique Almeida Fernandes +1

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 i…

physics.app-ph2022

Estimating time constants of the RTS noise in semiconductor devices: a complete description of the observation window in the time domain

Roberto da Silva, Gilson Wirth

We obtained a semi-analytical treatment obtaining estimators for the sample variance and variance of sample variance for the RTS noise. Our method suggests a way to experimentally…

cond-mat.dis-nn2020★ 10 cited

A thorough study of the performance of simulated annealing with geometric cooling in correlated and long tailed spatial scenarios

Roberto da Silva, Eliseu Venites Filho, Alexandre Alves

Metaheuristics, as the simulated annealing used in the optimization of disordered systems, goes beyond physics, and the traveling salesman is a paradigmatic NP-complete problem tha…

q-fin.ST2019

On the quantum behavior and clustering properties of correlated financial portfolios

Carlo Requião da Cunha, Roberto da Silva

We investigate 17 digital currencies making an analogy with quantum systems and develop the concept of eigenportfolios. We show that the density of states of the correlation matrix…

cond-mat.stat-mech2019★ 6 cited

Numerical study of condensation in a Fermi-like model of conterflowing particles via Gini coefficient

Eduardo V. Stock, Roberto da Silva, Carlo R. da Cunha

The collective motion of self-driven particles shows interesting novel phenomena such as swarming and the emergence of patterns. We have recently proposed a model for counterflowin…

physics.soc-ph2019★ 3 cited

A Reactive-Darwinian Model for the Ultimatum Game: On the Dominance of Moderation in High Diffusion

Roberto da Silva, Pablo Valverde, Luis C. Lamb

We consider a version of the ultimatum game which simultaneously combines reactive and Darwinian aspects with offers in [0,1]. By reactive aspects, we consider the effects that lea…