3 papers
cond-mat.dis-nn2026
Revisiting the machine-learning density functional for the one-dimensional Hubbard model with random external potential
Octavio D. R. Salmon, Minos A. Neto, J. Roberto Viana +1
We revisit the machine-learning (ML) approach to the universal density functional of the one-dimensional Hubbard model with a site-dependent random potential $\math…
cond-mat.stat-mech2026
Resolution of the Two-Dimensional Ferromagnetic Spin-3/2 Ising Model via Cluster Growth
J. Roberto Viana, Octavio D. Rodriguez Salmon, Minos A. Neto +2
We propose a computational methodology based on a hierarchical cluster growth process to solve spin-3/2 Ising models efficiently. The method circumvents the exponential complexity…
cond-mat.str-el2025
Saturation Field as a Direct Probe of Exchange and Single-Ion Anisotropies in Spin-1 Magnets
M. A. R. Griffith, S. Rufo, H. Caldas +3
High magnetic fields provide a direct route to probe the anisotropies that govern spin dynamics in layered magnets. Using the SU(3) bond operator framework for spin 1 systems, we d…