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.
, author Civelli, M
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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.