Quantum corrections to the properties of a dense fluid with non-analytic intermolecular potential function

Abstract

The problem of calculating quantum corrections to the properties of a dense fluid whose molecules interact via pair potentials which are non-analytic functions of the intermolecular separation is studied. Expressions are given for the first and second quantum corrections to the free energy, and the first quantum correction to the radial distribution function. In the latter case it is important to include terms which, although negligible as far as thermodynamic properties are concerned, contribute significantly to the radial distribution function in regions near the potential singularities.