5 papers
A p-Spin Interaction Ashkin-Teller Spin-Glass Model
I. S. Queiroz, F. A. da Costa, F. D. Nobre
A p-spin interaction Ashkin-Teller spin glass, with three independent Gaussian probability distributions for the exchange interactions, is studied by means of the replica method. A…
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…
Universality in short-range Ising spin glasses
E. Nogueira, S. Coutinho, F. D. Nobre +1
The role of the distribution of coupling constants on the critical exponents of the short-range Ising spin-glass model is investigated via real space renormalization group. A saddl…
Short-Range Ising Spin Glass: Multifractal Properties
E. Nogueira, S. Coutinho, F. D. Nobre +2
The multifractal properties of the Edwards-Anderson order parameter of the short-range Ising spin glass model on d=3 diamond hierarchical lattices is studied via an exact recursion…