Conditions for a consistent picture of critical phenomena in a strongly coupled ionic mixture

Abstract

We discuss the minimum conditions required to build a consistent picture for the demixing phenomena in a binary ionic mixture. We show that the electronic polarization plays a fundamental role. Namely, if the dielectric electronic function ε(q) fulfils the compressibility sum rule and if the weak-coupling electron-ion hypothesis applies, then the ionic mixture may be described as a mixture of « pseudo-atoms »