title: Electrical conductivity of high-pressure liquid hydrogen by quantum Monte Carlo methods.
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 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.
authors.affiliation: Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
authors.forename: Fei
authors.initials: F
authors.lastname: Lin
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Morales
authors.forename: Kris T
authors.initials: KT
authors.lastname: Delaney
authors.forename: Carlo
authors.initials: C
authors.lastname: Pierleoni
authors.forename: Richard M
authors.initials: RM
authors.lastname: Martin
authors.forename: D M
authors.initials: DM
authors.lastname: Ceperley