49 citations · 58 across the 4 of their papers we have counts for
4 papers
Spatio-temporal conjecture for diffusion
Mendeli H. Vainstein, Rafael Morgado, Fernando A. Oliveira
We present here a conjecture about the equivalence between the noise density of states of a system governed by a generalized Langevin equation and the fluctuation in the energy den…
Mixing, Ergodicity and the Fluctuation-Dissipation Theorem in complex systems
M. H. Vainstein, I. V. L. Costa, F. A. Oliveira
Complex systems such as glasses, gels, granular materials, and systems far from equilibrium exhibit violation of the ergodic hypothesis (EH) and of the fluctuation-dissipation theo…
Non-exponential relaxation for anomalous diffusion
Mendeli H. Vainstein, Ismael V. L. Costa, Rafael Morgado +1
We study the relaxation process in normal and anomalous diffusion regimes for systems described by a generalized Langevin equation (GLE). We demonstrate the existence of a very gen…
C2 densely the 2-sphere has an elliptic closed geodesic
Gonzalo Contreras, Fernando Oliveira
We prove that a riemannian metric on the 2-sphere or the projective plane can be C2-approximated by a smooth metric whose geodesic flow has an elliptic closed geodesic.