Kinetic temperature and pressure of an active Tonks gas

Autor:	Schiltz-Rouse, Elijah, Row, Hyeongjoo, Mallory, Stewart A.
Rok vydání:	2023
Předmět:	Condensed Matter - Soft Condensed Matter Condensed Matter - Statistical Mechanics
Zdroj:	Phys. Rev. E 108, 064601 (2023)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevE.108.064601
Popis:	Using computer simulation and analytical theory, we study an active analog of the well-known Tonks gas, where active Brownian particles are confined to a one-dimensional (1D) channel. By introducing the notion of a kinetic temperature, we derive an accurate analytical expression for the pressure and clarify the paradoxical behavior where active Brownian particles confined to 1D exhibit anomalous clustering but no motility-induced phase transition. More generally, this work provides a deeper understanding of pressure in active systems as we uncover a unique link between the kinetic temperature and swim pressure valid for active Brownian particles in higher dimensions. Comment: 4 page main text + 3 page SI. Simulation videos available at: https://www.dropbox.com/sh/3jz9bmgv1gfbfd1/AACj8DoMqXtg7U0OKpjkQrMaa?dl=0
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2304.13858 Zobrazit plný text záznamu View this record from Arxiv