41 citations · 133 across the 14 of their papers we have counts for
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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.…
Field behavior of an Ising model with aperiodic interactions
Angsula Ghosh, T. A. S. Haddad, S. R. Salinas
We derive exact renormalization-group recursion relations for an Ising model, in the presence of external fields, with ferromagnetic nearest-neighbor interactions on Migdal-Kadanof…
Tricritical behaviour in deterministic aperiodic Ising systems
T. A. S. Haddad, Angsula Ghosh, S. R. Salinas
We use a mixed-spin model, with aperiodic ferromagnetic exchange interactions and crystalline fields, to investigate the effects of deterministic geometric fluctuations on first-or…