Accurate Exchange-Correlation Energies for the Warm Dense Electron Gas

The density matrix quantum Monte Carlo (DMQMC) method is used to sample exact-on-average Nbody density matrices for uniform electron gas systems of up to {10}^{124}matrix elements via a stochastic solution of the Bloch equation. The results of these calculations resolve a current debate over the accuracy of the data used to parametrize finite-temperature density functionals. Exchange-correlation energies calculated using the real-space...