9 citations · 10 across the 3 of their papers we have counts for
3 papers
Emergence of Critical Phenomena in Full Configuration Interaction Quantum Monte Carlo
James J. Shepherd, Lauretta R. Schwarz, Robert E. Thomas +3
There has been recent literature discussion on the origin and severity of the `sign problem' in full configuration interaction quantum Monte Carlo (FCIQMC) and its `initiator' adap…
Correlation Energy Divergences in Metallic Systems
James J. Shepherd, Andreas Grüneis
We numerically examine divergences of the total energy in metallic systems of approximate many-body theories using Hartree--Fock as a reference, including perturbative (M\oller-Ple…
Structural trends in clusters of quadrupolar spheres
Mark A. Miller, James J. Shepherd, David J. Wales
The influence of quadrupolar interactions on the structure of small clusters is investigated by adding a point quadrupole of variable strength to the Lennard-Jones potential. Compe…