Fluctuation theory of liquids

A fluctuation theory is proposed in which both the regular region of the phase diagram and the region in the vicinity of the critical point are described based on the same assumptions. It was shown that the critical indices could be determined more precisely within the fluctuation theory than by the scaling concept; the critical point affects almost the entire regular region of the phase diagram; the critical isotherm is a line of singular points of the statistical sum, etc. The experimental data confirm all of these predictions of the theory.