5 papers
A phenomenological description of critical slowing down at period-doubling bifurcations
Edson D. Leonel, João P. C. Ferreira, Diego F. M. Oliveira
We present a phenomenological description of the critical slowing down associated with period-doubling bifurcations in discrete dynamical systems. Starting from a local Taylor expa…
On a Sharp Fourier Extension Inequality on the Circle with Lacunary Spectrum
Felipe Gonçalves, João Paulo Ferreira
We prove a sharp Fourier extension inequality on the circle for the Tomas-Stein exponent for functions whose spectrum satisfies .
A Two-Gauge Field Model for Magnetoelectric Boundaries
F. A. Barone, H. L. Oliveira, J. P. Ferreira
This work introduces a field-theoretical model designed to simulate the presence of material layers with magnetoelectric properties. The model comprises the standard Maxwell field…
Generalized Neumann boundary condition for the scalar field
J. C. Fernandes, J. P. Ferreira, F. E. Barone +3
In this paper, we explore the Klein-Gordon field theory in dimensions in the presence of a -dimensional hyperplanar -like potential that couples quadratically to…
Considerations on electromagnetic radiation in Podolsky electrodynamics within a Lorentz-symmetry violating framework
J. P. Ferreira, Patricio Gaete, José Abdalla Helayël-Neto
We explore how higher-order derivative terms impact a physical observable within a Lorentz-Symmetry Violating (LSV) framework. We specifically examine Podolsky electrodynamics coup…