Repulsive torques alone trigger crystallization of constant speed active particles

TL;DR

This paper explores how repulsive torques can induce crystallization in constant-speed active particles without decreasing their speed, highlighting the role of torque-driven interactions in active matter phase transitions.

Contribution

It introduces a minimal model demonstrating that repulsive torques alone can trigger crystallization in active particles maintaining constant speed, advancing understanding of active matter phases.

Findings

Repulsive torques can induce crystallization without speed reduction.

The model clarifies the role of torque in phase behavior of active matter.

Active particles can form crystalline structures solely through torque interactions.

Abstract

We investigate the possibility for self-propelled particles to crystallize without reducing their intrinsic speed. We illuminate how, in the absence of any force, the competition between self-propulsion and repulsive torques determine the macroscopic phases of constant-speed active particles. This minimal model expands upon existing approaches for an improved understanding of crystallization of active matter.