A fixed Givens-exchange ansatz with two ordered all-pair blocks and RY rotations achieves six-seed mean errors of 0.000000124, 0.000128558, and 0.000002152 Hartree on LiH-6, H2O-8, and BeH2-6 Hamiltonians respectively, all chemically accurate.
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A Givens-exchange ansatz for molecular variational eigensolvers
A fixed Givens-exchange ansatz with two ordered all-pair blocks and RY rotations achieves six-seed mean errors of 0.000000124, 0.000128558, and 0.000002152 Hartree on LiH-6, H2O-8, and BeH2-6 Hamiltonians respectively, all chemically accurate.