Numerical evidence for unstable magnons at high fields in the Heisenberg antiferromagnet on the square lattice

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/174370We find evidence for decaying magnons at strong magnetic field in the square lattice spin-1/2 Heisenberg antiferromagnet. The results are obtained using Quantum Monte Carlo simulations combined with a Bayesian inference technique to obtain dynamics and are consistent with predictions from spin wave theory.4 pages, 5 figuresStrongly Correlated ElectronsNumerical evidence for unstable magnons at high fields in the Heisenberg antiferromagnet on the square latticetext