A New Microscopic Calculation for the Uniform Electron Fluid

Abstract

The static fluctuation approximation is applied for the first time to an electronic system. A simple model (a uniform electron fluid) is chosen to explore the applicability of static fluctuation approximation to electrons in metals. The thermodynamic properties -the internal energy per particle, the pressure, the entropy per unit volume, the heat capacity per unit volume, and the chemical potential -are calculated over a wide range of densities within the metallic-density region. Finally, the pair-correlation function for the electron fluid is evaluated. Values of this function are then tabulated for zero-interparticle separation at several densities of interest. The results of this work are found to be in good agreement with several other many-body calculations.