Inhomogeneous fluid of penetrable-spheres: application of the random phase approximation
Abstract
The focus of the present work is the application of the random phase approximation (RPA), derived for inhomogeneous fluids [Frydel and Ma, Phys. Rev. E 93, 062112 (2016)], to penetrable-spheres. As penetrable-spheres transform into hard-spheres with increasing interactions, they provide an interesting case for exploring the RPA, its shortcomings, and limitations, the weak- versus the strong-coupling limit. Two scenarios taken up by the present study are a one-component and a two-component fluid with symmetric interactions. In the latter case, the mean-field contributions cancel out and any contributions from particle interactions are accounted for by correlations. The accuracy of the RPA for this case is the result of a somewhat lucky cancellation of errors.
Keywords
Cite
@article{arxiv.1704.06725,
title = {Inhomogeneous fluid of penetrable-spheres: application of the random phase approximation},
author = {Yan Xiang and Derek Frydel},
journal= {arXiv preprint arXiv:1704.06725},
year = {2017}
}