2 citations · 2 across the 4 of their papers we have counts for
5 papers
Richardson-Gaudin states of non-zero seniority III: The Perfect-Pairing limit
Paul A. Johnson
Strongly correlated electrons can be treated with a configuration interaction of Slater determinants grouped by number of unpaired electrons with exponential cost. The first two pa…
Richardson-Gaudin states of non-zero seniority II: Single-reference treatment of strong correlation
Paul A. Johnson
Strongly correlated systems are well described as a configuration interaction of Slater determinants classified by their number of unpaired electrons. This treatment is however unf…
Richardson-Gaudin states of non-zero seniority I: matrix elements
Paul A. Johnson
Seniority-zero wavefunctions describe bond-breaking processes qualitatively. As eigenvectors of a model Hamiltonian, Richardson-Gaudin states provide a clear physical picture and a…
Beyond a Richardson-Gaudin mean-field: Slater-Condon rules and perturbation theory
Paul A. Johnson
Richardson-Gaudin states provide a basis of the Hilbert space for strongly correlated electrons. In this study, optimal expressions for the transition density matrix elements betwe…
Richardson-Gaudin States
Paul Andrew Johnson
This chapter gives an overview of Richardson-Gaudin states which represent weakly correlated pairs of electrons. They are parametrized by sets of numbers obtained from non-linear e…