2 papers
physics.chem-ph2021
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…
physics.chem-ph2020
Richardson-Gaudin mean-field for strong correlation in quantum chemistry
P. A. Johnson, C. -É. Fecteau, F. Berthiaume +8
Ground state eigenvectors of the reduced Bardeen-Cooper-Schrieffer Hamiltonian are employed as a wavefunction ansatz to model strong electron correlation in quantum chemistry. This…