1.9k citations · 2.2k across the 11 of their papers we have counts for
11 papers
QuantumATK: An integrated platform of electronic and atomic-scale modelling tools
Søren Smidstrup, Troels Markussen, Pieter Vancraeyveld +19
QuantumATK is an integrated set of atomic-scale modelling tools developed since 2003 by professional software engineers in collaboration with academic researchers. While different…
Projector quantum Monte Carlo with matrix product states
Sebastian Wouters, Brecht Verstichel, Dimitri Van Neck +1
We marry tensor network states (TNS) and projector quantum Monte Carlo (PMC) to overcome the high computational scaling of TNS and the sign problem of PMC. Using TNS as trial wavef…
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 determination of the two-particle density matrix as a quantum many-body technique
Brecht Verstichel
In this thesis the variational optimisation of the density matrix is discussed as a method in many-body quantum mechanics. This is a relatively unknown technique in which one tries…
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…