63 citations · 77 across the 3 of their papers we have counts for
3 papers
Extensive v2DM study of the one-dimensional Hubbard model for large lattice sizes: Exploiting translational invariance and parity
Brecht Verstichel, Helen van Aggelen, Ward Poelmans +2
Using variational density matrix optimization with two- and three-index conditions we study the one-dimensional Hubbard model with periodic boundary conditions at various filling f…
Using tensor hypercontraction density fitting to achieve an O(L^4) CISD algorithm
Neil Shenvi, Helen Van Aggelen, Weitao Yang
Recently, Hohenstein et al[1] introduced tensor hypercontraction density fitting to decompose the rank-4 electron repulsion integral tensor as the product of five rank-2 tensors. I…
Variational determination of the second-order density matrix for the isoelectronic series of beryllium, neon and silicon
Brecht Verstichel, Helen van Aggelen, Dimitri Van Neck +2
The isoelectronic series of Be, Ne and Si are investigated using a variational determination of the second-order density matrix. A semidefinite program was developed that exploits…