15 citations · 18 across the 6 of their papers we have counts for
7 papers
Examination of Cluster Based Methods to Fermionic Systems
Jeffrey Keyes, Carlos Jimenez-Hoyos
We present the cluster mean field(cMF) and its extensions into perturbation theory(cPT) and coupled cluster(cCC) methods for fermionic systems. We discuss how the commutation rules…
Examining Convergence of Cluster Perturbation Theory and Cluster Coupled Cluster for J1-J2 Heisenberg Spin Lattices
Jeffrey Keyes, Carlos Jimenez-Hoyos
In previous work, it was shown that using the cluster mean field(cMF) wavefunction as the zeroth order wavefunction for perturbation theory and coupled cluster produces a reasonabl…
Approaching the Full Configuration Interaction Low-Energy Spectrum from an Arbitrary Reference Subspace
Carlos A. Jiménez-Hoyos
In a previous work (arXiv:2010.02027) we showed how the full configuration interaction (FCI) ground state energy can be obtained as a functional of an arbitrary reference wavefunct…
Approaching the Full Configuration Interaction Ground State from an Arbitrary Wavefunction with Gradient Descent and Quasi-Newton Algorithms
Carlos A. Jiménez-Hoyos
We consider gradient descent and quasi-Newton algorithms to optimize the full configuration interaction (FCI) ground state wavefunction starting from an arbitrary reference state $…
Minimal matrix product states and generalizations of mean-field and geminal wavefunctions
Henrik R. Larsson, Carlos A. Jiménez-Hoyos, Garnet Kin-Lic Chan
Simple wavefunctions of low computational cost but which can achieve qualitative accuracy across the whole potential energy surface (PES) are of relevance to many areas of electron…
On a dual representation of the Goldstone manifold
Carlos A. Jiménez-Hoyos, Rayner R. Rodríguez-Guzmán, Thomas M. Henderson +1
An intrinsic wavefunction with a broken continuous symmetry can be rotated with no energy penalty leading to an infinite set of degenerate states known as a Goldstone manifold. In…