26 citations · 108 across the 13 of their papers we have counts for
4 papers · 2 filters
Tricritical Points in the Sherrington-Kirkpatrick Model in the Presence of Discrete Random Fields
J. M. de Araujo, F. D. Nobre, F. A. da Costa
The infinite-range-interaction Ising spin glass is considered in the presence of an external random magnetic field following a trimodal (three-peak) distribution. The model is stud…
Zero-temperature TAP equations for the Ghatak-Sherrington model
F. A. da Costa, J. M. de Araujo
The zero-temperature TAP equations for the spin-1 Ghatak-Sherrington model are investigated. The spin-glass energy density (ground state) is determined as a function of the anisotr…
Effects of Random Biquadratic Couplings in a Spin-1 Spin-Glass Model
J. M. de Araujo, F. A. da Costa, F. D. Nobre
A spin-1 model, appropriated to study the competition between bilinear (J_{ij}S_{i}S_{j}) and biquadratic (K_{ij}S_{i}^{2}S_{j}^{2}) random interactions, both of them with zero mea…
First-order transitions and triple point on a random p-spin interaction model
J. M. de Araujo, F. A. da Costa, F. D. Nobre
The effects of competing quadrupolar- and spin-glass orderings are investigated on a spin-1 Ising model with infinite-range random -spin interactions. The model is studied throu…