21 citations · 36 across the 5 of their papers we have counts for
3 papers · 1 filter
Non-universal behavior for aperiodic interactions within a mean-field approximation
Maicon S. Faria, N. S. Branco, M. H. R. Tragtenberg
We study the spin-1/2 Ising model on a Bethe lattice in the mean-field limit, with the interaction constants following two deterministic aperiodic sequences: Fibonacci or period-do…
Variational method study of the spin-1 Ising model with biaxial crystal-field anisotropy
J. Ricardo de Sousa, N. S. Branco
The phase diagram of the spin-1 Ising model in the presence of a biaxial crystal-field anisotropy is studied within the framework of a variational approach, based on the Bogolyubov…
Anisotropic Heisenberg model on hierarchical lattices with aperiodic interactions: a renormalization-group approach
N. S. Branco, J. Ricardo de Sousa, Angsula Ghosh
Using a real-space renormalization-group approximation, we study the anisotropic quantum Heisenberg model on hierarchical lattices, with interactions following aperiodic sequences.…