Active interface polarization is a state function
Statistical Mechanics
2020-06-01 v1 Soft Condensed Matter
Abstract
We prove three exact sum rules that relate the polarization of active Brownian particles to their one-body current: (i) The total polarization vanishes, provided that there is no net flux through the boundaries, (ii) at any planar wall the polarization is determined by the magnitude of the bulk current, and (iii) the total interface polarization between phase-separated fluid states is rigorously determined by the gas-liquid current difference. This result precludes the influence of the total interface polarization on active bulk coexistence and questions the proposed coupling of interface to bulk.
Keywords
Cite
@article{arxiv.2003.07673,
title = {Active interface polarization is a state function},
author = {Sophie Hermann and Matthias Schmidt},
journal= {arXiv preprint arXiv:2003.07673},
year = {2020}
}
Comments
6 pages, 1 figure