119 citations · 347 across the 11 of their papers we have counts for
11 papers
Spin-Glass Attractor on Tridimensional Hierarchical Lattices in the Presence of an External Magnetic Field
Octavio R. Salmon, Fernando D. Nobre
A nearest-neighbor-interaction Ising spin glass, in the presence of an external magnetic field, is studied on different hierarchical lattices that approach the cubic lattice. The m…
Phase Diagram of the Two-Dimensional Ising Model with Random Competing Interactions
Octavio R. Salmon, J. Ricardo de Sousa, Fernando D. Nobre
An Ising model with ferromagnetic nearest-neighbor interactions () and random next-nearest-neighbor interactions [ with probability and with p…
Multicritical Behavior in a Random-Field Ising Model under a Continuous-Field Probability Distribution
Octavio R. Salmon, Nuno Crokidakis, Fernando D. Nobre
A random-field Ising model that is capable of exhibiting a rich variety of multicritical phenomena, as well as a smearing of such behavior, is investigated. The model consists of a…
q-Gaussians in the porous-medium equation: stability and time evolution
Veit Schwämmle, Fernando D. Nobre, Constantino Tsallis
The stability of -Gaussian distributions as particular solutions of the linear diffusion equation and its generalized nonlinear form, $\pderiv{P(x,t)}{t} = D \pderiv{^2 [P(x,t)]…
Ising spin glass under continuous-distribution random magnetic fields: Tricritical points and instability lines
N. Crokidakis, F. D. Nobre
The effects of random magnetic fields are considered in an Ising spin-glass model defined in the limit of infinite-range interactions. The probability distribution for the random m…
Destruction of first-order phase transition in a random-field Ising model
N. Crokidakis, F. D. Nobre
The phase transitions that occur in an infinite-range-interaction Ising ferromagnet in the presence of a double-Gaussian random magnetic field are analyzed. Such random fields are…