Numerical evidence for unstable magnons at high fields in the Heisenberg antiferromagnet on the square lattice
classification
❄️ cond-mat.str-el
keywords
antiferromagnetevidenceheisenberglatticemagnonssquarebayesiancarlo
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We 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.
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