49 citations · 73 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…
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…
Stochastic description of the dynamics of the random-exchange Heisenberg chain
M. H. Vainstein, R. Morgado, F. A. Oliveira +2
We study the diffusion process in a Heisenberg chain with correlated spatial disorder, with a power spectrum in the momentum space behaving as , using a stochastic descript…
Breakdown of the Fluctuation-Dissipation Theorem for fast superdiffusion
Ismael V. L. Costa, Rafael Morgado, Marcos V. B. T. Lima +1
We study anomalous diffusion for one-dimensional systems described by a generalized Langevin equation. We show that superdiffusion can be classified in slow superdiffusion and fast…