\textit{Ab Initio} results for the Static Structure Factor of the Warm Dense Electron Gas

Abstract

The uniform electron gas at finite temperature is of high current interest for warm dense matter research. The complicated interplay of quantum degeneracy and Coulomb coupling effects is fully contained in the pair distribution function or, equivalently, the static strucutre factor. By combining exact quantum Monte Carlo results for large wave vectors with the long-range behavior from the Singwi-Tosi-Land-Sjölander approximation, we are able to obtain highly accurate data for the static structure factor over the entire $k$-range. This allows us to gauge the accuracy of previous approximations and discuss their respective shortcomings. Further, our new data will serve as valuable input for the computation of other quantities.

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