Vapour-Liquid Coexistence of an Active Lennard-Jones fluid
Vasileios Prymidis, Siddharth Paliwal, Marjolein Dijkstra, Laura, Filion
TL;DR
This paper investigates the vapour-liquid coexistence in an active Lennard-Jones fluid through simulations, revealing unique out-of-equilibrium behaviors and providing equations of state for the system.
Contribution
It introduces a detailed simulation study of active Lennard-Jones particles, including equations of state and coexistence curves, extending understanding of active matter thermodynamics.
Findings
Coexistence densities follow simple power laws.
Deviations from classical thermodynamic laws observed.
Equations of state derived for active matter system.
Abstract
We study a three-dimensional system of self-propelled Lennard-Jones particles using Brownian Dynamics simulations. Using recent theoretical results for active matter, we calculate the pressure and report equations of state for the system. Additionally, we chart the vapour-liquid coexistence and show that the coexistence densities can be well described using simple power laws. Lastly, we demonstrate that our out-of-equilibrium system shows deviations from both the law of rectilinear diameters and the law of corresponding states.
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