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cond-mat.stat-mech2026
Accurate ground-state entropies from population Monte Carlo: The antiferromagnetic Ising model on the Shastry-Sutherland lattice
Denis Gessert, Wolfhard Janke, Martin Weigel
We demonstrate how the population annealing Monte Carlo simulation method can be used to compute the ground-state entropy to high precision. This approach is tested for the classic…
cond-mat.stat-mech2026
Meandering stripes in the frustrated - Ising model on the honeycomb lattice
Denis Gessert, Martin Weigel, Wolfhard Janke
We study the frustrated - Ising model on the honeycomb lattice with ferromagnetic nearest-neighbor couplings fixed at and strong antiferromagnetic next-nearest-ne…