37 research outputs found
{\em Ab initio} Quantum Monte Carlo simulation of the warm dense electron gas in the thermodynamic limit
We perform \emph{ab initio} quantum Monte Carlo (QMC) simulations of the warm
dense uniform electron gas in the thermodynamic limit. By combining QMC data
with linear response theory we are able to remove finite-size errors from the
potential energy over the entire warm dense regime, overcoming the deficiencies
of the existing finite-size corrections by Brown \emph{et al.}~[PRL
\textbf{110}, 146405 (2013)]. Extensive new QMC results for up to
electrons enable us to compute the potential energy and the
exchange-correlation free energy of the macroscopic electron gas with
an unprecedented accuracy of . A comparison of our new data to the recent parametrization of
by Karasiev {\em et al.} [PRL {\bf 112}, 076403 (2014)] reveals
significant deviations to the latter