A universal magnetic energy scale J* emerges at finite doping in the Fermi-Hubbard model, controlling magnetic correlations, bimagnon spectra, pseudogap onset, and the transition to incommensurate spin-density waves.
\ Jiang , author J
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A strong-coupling perturbation in chemical potential and second-neighbor hopping around a sign-problem-free reference system yields accurate spectral functions for doped Hubbard models via lattice QMC.
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Universal magnetic energy scale in the doped Fermi-Hubbard model
A universal magnetic energy scale J* emerges at finite doping in the Fermi-Hubbard model, controlling magnetic correlations, bimagnon spectra, pseudogap onset, and the transition to incommensurate spin-density waves.
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Perturbative solution of fermionic sign problem in lattice Quantum Monte Carlo
A strong-coupling perturbation in chemical potential and second-neighbor hopping around a sign-problem-free reference system yields accurate spectral functions for doped Hubbard models via lattice QMC.