Statistical Theory of Phase Transition. I

General Theory for Lattice Gas

抄録

From the point of view of molecular clusters we physically, interpret the statistical properties of phase transitions. Our results for a lattice gas are expected to be qualitatively correct, though these are approximate from the quantitative point of view. In Part 1 the partition function, the pressure and the density of a lattice gas are calculated in their general forms. Particularly, the discontinuity of the derivative of the isotherm in P−v diagram is derived from our calculation of the partition function.