Droplet Model NearTc: Droplet-Droplet Interaction and Correlation Function

Abstract
In the equation of state of a real gas near its critical point the "excluded-volume" effect is taken into account for the droplet-droplet interaction in the droplet model. Considering the hard-sphere repulsion between droplets as a small perturbation ("second virial coefficient") we find the scaling laws to be unchanged. No renormalization of the critical exponents occurs. With an additional attraction between the droplets, the corrections to the asymptotic scaling laws are in agreement with those of Green, Cooper, and Levelt Sengers and Mermin and Rehr.