Thermodynamically self-consistent integral equations and the structure of liquid metals

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Abstract
The authors discuss the application of the new thermodynamically self-consistent integral equations for the determination of the structural properties of liquid metals. They present a detailed comparison of the structure (S(q) and g(r)) for models of liquid alkali metals as obtained from two thermodynamically self-consistent integral equations and some published exact computer simulation results; the range of states extends from the triple point to the expanded metal. The theories which only impose thermodynamic self-consistency without any fitting of external data show an excellent agreement with the simulation results, thus demonstrating that this new type of integral equation is definitely superior to the conventional ones (hypernetted chain, Percus-Yevick, mean spherical approximation, etc.).