390 citations · 1.8k across the 24 of their papers we have counts for
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Diffusion Monte Carlo study of circular quantum dots
F. Pederiva, C. J. Umrigar, E. Lipparini
We present ground and excited state energies obtained from Diffusion Monte Carlo (DMC) calculations, using accurate multiconfiguration wave functions, for electrons ()…
Monte Carlo Eigenvalue Methods in Quantum Mechanics and Statistical Mechanics
M. P. Nightingale, C. J. Umrigar
In this review we discuss, from a unified point of view, a variety of Monte Carlo methods used to solve eigenvalue problems in statistical mechanics and quantum mechanics. Although…
Excitation energies from density functional perturbation theory
Claudia Filippi, C. J. Umrigar, X. Gonze
We consider two perturbative schemes to calculate excitation energies, each employing the Kohn-Sham Hamiltonian as the unperturbed system. Using accurate exchange-correlation poten…
A critical assessment of the Self-Interaction Corrected Local Density Functional method and its algorithmic implementation
S. Goedecker, C. J. Umrigar
We calculate the electronic structure of several atoms and small molecules by direct minimization of the Self-Interaction Corrected Local Density Approximation (SIC-LDA) functional…