3 citations · 4 across the 6 of their papers we have counts for
7 papers
Bivariational Principle for an Antisymmetrized Product of Nonorthogonal Geminals Appropriate for Strong Electron Correlation
Paul A. Johnson, Paul W. Ayers, Stijn De Baerdemacker +2
We develop a bivariational principle for an antisymmetric product of nonorthogonal geminals. Special cases reduce to the antisymmetric product of strongly-orthogonal geminals (APSG…
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…
Perturbative corrections for Hartree-Fock-like Algebraic Bethe Ansatz analogue
Jean-David Moisset, Laurie Carrier, Paul A. Johnson
Rayleigh Schrödinger perturbation theory corrections are developed for an algebraic Bethe ansatz of individual electrons. Numerical results are ambiguous and would need either an o…
Transition density matrices of Richardson-Gaudin states
Paul A. Johnson, Hubert Fortin, Samuel Cloutier +1
Recently, ground state eigenvectors of the reduced Bardeen-Cooper-Schrieffer Hamiltonian, Richardson-Gaudin (RG) states, have been employed as a wavefunction ansatz for strong corr…
Richardson-Gaudin geminal wavefunctions in a Slater determinant basis
Charles-Émile Fecteau, Frédéric Berthiaume, Meriem Khalfoun +1
Geminal wavefunctions have been employed to model strongly-correlated electrons. These wavefunctions represent products of weakly-correlated pairs of electrons and reasonable appro…
Reduced density matrices of Richardson-Gaudin states in the Gaudin algebra basis
Charles-Émile Fecteau, Hubert Fortin, Samuel Cloutier +1
Eigenvectors of the reduced Bardeen-Cooper-Schrieffer Hamiltonian have recently been employed as a variational wavefunction ansatz in quantum chemistry. This wavefunction is a mean…