Comment on "Flocking without Alignment Interactions in Attractive Active Brownian Particles [arXiv:2303.07746]"

In a recent Letter, Caprini and L\"owen argue that attractive active Brownian particles can flock even in the absence of explicit aligning interactions of their velocities. In this comment, I show that the phenomenology described in [Phys. Rev. Lett. {\bf 130}, 148202 (2023)] in fact lacks seve...

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Bibliographic Details
Published in:arXiv.org 2023-08
Main Author: Mahault, Benoît
Format: Article
Language:English
Subjects:
Brownian motion
Phenomenology
Online Access:Get full text
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Summary:In a recent Letter, Caprini and L\"owen argue that attractive active Brownian particles can flock even in the absence of explicit aligning interactions of their velocities. In this comment, I show that the phenomenology described in [Phys. Rev. Lett. {\bf 130}, 148202 (2023)] in fact lacks several defining features of flocking, such as long-range correlations and large-scale directed motion.
ISSN:2331-8422