most citedNear-exact treatment of seniority-zero ground and excited states with a Richardson-Gaudin mean-field

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physics.chem-ph2022★ 1 cited

Near-exact treatment of seniority-zero ground and excited states with a Richardson-Gaudin mean-field

Charles-Émile Fecteau, Samuel Cloutier, Jean-David Moisset +4

Eigenvectors of the reduced Bardeen-Cooper-Schrieffer Hamiltonian, Richardson-Gaudin (RG) states, are used as a variational wavefunction Ansatz for strongly-correlated electronic s…