An efficient method for the Quantum Monte Carlo evaluation of the static density-response function of a many-electron system
Other Condensed Matter
2015-05-13 v2
Abstract
In a recent Letter we introduced Hellmann-Feynman operator sampling in diffusion Monte Carlo calculations. Here we derive, by evaluating the second derivative of the total energy, an efficient method for the calculation of the static density-response function of a many-electron system. Our analysis of the effect of the nodes suggests that correlation is described correctly and we find that the effect of the nodes can be dealt with.
Cite
@article{arxiv.0907.0879,
title = {An efficient method for the Quantum Monte Carlo evaluation of the static density-response function of a many-electron system},
author = {R. Gaudoin and J. M. Pitarke},
journal= {arXiv preprint arXiv:0907.0879},
year = {2015}
}