Fig. 4
From: A combined variational and diagrammatic quantum Monte Carlo approach to the many-electron problem
The inverse dielectric function (\(1/\epsilon\)). a–d Results for rs = 1–4 respectively at \(\lambda _{N = 5}^ \ast\), optimized for order 5, but we show \(1/\epsilon\) for all orders up to 5 and its extrapolated value. We also display error bars for extrapolated curve, which contains both the statistical error and the estimated extrapolation error. Here we use more rapidly converging VCCFS scheme. The comparison to DMC and RPA is shown. The DMC data are from refs. 31,32
