Equation of state for the edge flow of chiral colloidal fluids
Soft Condensed Matter
2026-04-22 v1 Statistical Mechanics
Abstract
We explore the edge flows that emerge at boundaries in nonequilibrium passive and active chiral colloidal fluids. We show that these complex interface currents obey an equation of state that relates their fluxes to bulk observables. For confined fluids, the edge flux is given by the average odd stress in the fluid. In phase-separated systems, the flux along the interface is given by the jump of the odd stress across the interface. We then use the equation of state to reveal, and contrast, the microscopic origins of the edge currents in passive and active systems.
Keywords
Cite
@article{arxiv.2604.18708,
title = {Equation of state for the edge flow of chiral colloidal fluids},
author = {Jessica Metzger and Cory Hargus and Julien Tailleur and Frédéric van Wijland},
journal= {arXiv preprint arXiv:2604.18708},
year = {2026}
}
Comments
9 pages, 5 figures