Electrical conductivity of high-pressure liquid hydrogen by quantum Monte Carlo methods

Fei Lin, Miguel A. Morales, Kris T. Delaney, Carlo Pierleoni, Richard M. Martin, D. M. Ceperley

Research output: Contribution to journalArticlepeer-review

Abstract

We compute the electrical conductivity for liquid hydrogen at high pressure using Monte Carlo techniques. The method uses coupled electron-ion Monte Carlo simulations 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. The extrapolated dc conductivity at 3000K for several densities shows a liquid semiconductor to liquid-metal transition at high pressure. Our results are in good agreement with shock-wave data.

Original languageEnglish (US)
Article number256401
JournalPhysical review letters
Volume103
Issue number25
DOIs
StatePublished - Dec 14 2009

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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