307 citations · 1.3k across the 22 of their papers we have counts for
22 papers
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…
The Three-Legged Tree Tensor Networks with SU(2)- and molecular point group symmetry
Klaas Gunst, Frank Verstraete, Dimitri Van Neck
We extend the three-legged tree tensor network state (T3NS) [J. Chem. Theory Comput. 2018, 14, 2026-2033] by including spin and the real abelian point group symmetries. T3NS inters…
T3NS: three-legged tree tensor network states
Klaas Gunst, Frank Verstraete, Sebastian Wouters +2
We present a new variational tree tensor network state (TTNS) ansatz, the three-legged tree tensor network state (T3NS). Physical tensors are interspersed with branching tensors. P…
A variational method for integrability-breaking Richardson-Gaudin models
Pieter W. Claeys, Jean-Sébastien Caux, Dimitri Van Neck +1
We present a variational method for approximating the ground state of spin models close to (Richardson-Gaudin) integrability. This is done by variationally optimizing eigenstates o…
Method For Making 2-Electron Response Reduced Density Matrices Approximately N-representable
Caitlin Lanssens, Paul W. Ayers, Dimitri Van Neck +3
In methods like geminal-based approaches or coupled cluster that are solved using the projected Schrödinger equation, direct computation of the 2-electron reduced density matrix (2…
Block product density matrix embedding theory for strongly correlated spin systems
Klaas Gunst, Sebastian Wouters, Stijn De Baerdemacker +1
Density matrix embedding theory (DMET) is a relatively new technique for the calculation of strongly correlated systems. Recently, block product DMET (BPDMET) was introduced for th…