190 citations · 264 across the 5 of their papers we have counts for
5 papers
Maximum Probability Domains for Hubbard Models
Guillaume Acke, Stijn De Baerdemacker, Pieter W. Claeys +4
The theory of Maximum Probability Domains (MPDs) is formulated for the Hubbard model in terms of projection operators and generating functions for both exact eigenstates as well as…
CheMPS2: a free open-source spin-adapted implementation of the density matrix renormalization group for ab initio quantum chemistry
Sebastian Wouters, Ward Poelmans, Paul W. Ayers +1
The density matrix renormalization group (DMRG) has become an indispensable numerical tool to find exact eigenstates of finite-size quantum systems with strong correlation. In the…
Variational optimization of the 2DM: approaching three-index accuracy using extended cluster constraints
Brecht Verstichel, Ward Poelmans, Stijn De Baerdemacker +2
The reduced density matrix is variationally optimized for the two-dimensional Hubbard model. Exploiting all symmetries present in the system, we have been able to study …
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…
Variational two-particle density matrix calculation for the Hubbard model below half filling using spin-adapted lifting conditions
Brecht Verstichel, Helen van Aggelen, Ward Poelmans +1
The variational determination of the two-particle density matrix is an interesting, but not yet fully explored technique that allows to obtain ground-state properties of a quantum…