Minimizing the phase of off-diagonal bond-Hamiltonian elements via local unitary rotations yields bases with better QMC average sign than computational or cluster eigenbases on frustrated Heisenberg models.
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Sign-optimized Quantum Monte Carlo
Minimizing the phase of off-diagonal bond-Hamiltonian elements via local unitary rotations yields bases with better QMC average sign than computational or cluster eigenbases on frustrated Heisenberg models.