Electrical conductivity of high-pressure liquid hydrogen by quantum Monte Carlo methods
Strongly Correlated Electrons
2010-01-22 v2 Materials Science
Abstract
We compute the electrical conductivity for liquid hydrogen at high pressure using quantum Monte Carlo. The method uses Coupled Electron-Ion Monte Carlo to generate configurations of liquid hydrogen. For each configuration correlated sampling of electrons is performed in order to calculate a set of lowest many-body eigenstates and current-current correlation functions of the system, which are summed over in the many-body Kubo formula to give AC electrical conductivity directly. The extrapolated DC conductivity at 3000 K for several densities shows a liquid semiconductor to liquid-metal transition at high pressure. Our results are in good agreement with shock-wave data.
Keywords
Cite
@article{arxiv.0909.2248,
title = {Electrical conductivity of high-pressure liquid hydrogen by quantum Monte Carlo methods},
author = {Fei Lin and Miguel A. Morales and Kris T. Delaney and Carlo Pierleoni and Richard M. Martin and D. M. Ceperley},
journal= {arXiv preprint arXiv:0909.2248},
year = {2010}
}
Comments
4 pages, 5 figures