Diagrammatic Monte Carlo simulations on the 2D Hubbard model demonstrate that downward renormalization of the effective coupling combined with quasiparticle residue suppression prevents the Stoner instability at an ordinary Van Hove singularity down to temperatures an order of magnitude below the me
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Avoided Stoner instability at a single ordinary Van Hove point
Diagrammatic Monte Carlo simulations on the 2D Hubbard model demonstrate that downward renormalization of the effective coupling combined with quasiparticle residue suppression prevents the Stoner instability at an ordinary Van Hove singularity down to temperatures an order of magnitude below the me