Perturbation-Theory Approach to the First Quantum Correction to the Square-Well High-Temperature Classical Second Virial Coefficient

Abstract

A pertubation method for determining the first quantum correction to the square-well classical second virial coefficient in a high-temperature approximation is presented. It is an alternative method to that presented by Nilsen, and agrees with his result to first-order terms in $\beta \epsilon$, where $\beta ={\mathrm{}\left(\mathrm{kT}\right)\mathrm{}}^{-1\mathrm{}}$ and $\epsilon$ is the depth of the well.