title: Hartree-Fock ground state of the three-dimensional electron gas.
abstract: In 1962, Overhauser showed that within Hartree-Fock (HF) the electron gas is unstable to a spin-density wave state. Determining the true HF ground state has remained a challenge. Using numerical calculations for finite systems and analytic techniques, we study the unrestricted HF ground state of the three-dimensional electron gas. At high density, we find broken spin symmetry states with a nearly constant charge density. Unlike previously discussed spin wave states, the observed wave vector of the spin-density wave is smaller than 2k(F). The broken-symmetry state originates from pairing instabilities at the Fermi surface, a model for which is proposed.
authors.affiliation: Department of Physics, College of William and Mary, Williamsburg, VA 23187, USA.
authors.forename: Shiwei
authors.initials: S
authors.lastname: Zhang
authors.forename: D M
authors.initials: DM
authors.lastname: Ceperley