Mapping a Homopolymer onto a Model Fluid
Statistical Mechanics
2009-11-11 v1 Soft Condensed Matter
Abstract
We describe a linear homopolymer using a Grand Canonical ensemble formalism, a statistical representation that is very convenient for formal manipulations. We investigate the properties of a system where only next neighbor interactions and an external, confining, field are present, and then show how a general pair interaction can be introduced perturbatively, making use of a Mayer expansion. Through a diagrammatic analysis, we shall show how constitutive equations derived for the polymeric system are equivalent to the Ornstein-Zernike and P.Y. equations for a simple fluid, and find the implications of such a mapping for the simple situation of Van der Waals mean field model for the fluid.
Cite
@article{arxiv.cond-mat/0604045,
title = {Mapping a Homopolymer onto a Model Fluid},
author = {S. Pasquali and J. K. Percus},
journal= {arXiv preprint arXiv:cond-mat/0604045},
year = {2009}
}
Comments
12 pages, 3 figures