Phase behaviour and dynamics of three-dimensional active dumbbell systems

Abstract

We present a comprehensive numerical study of the phase behavior and dynamics of a three-dimensional active dumbbell system with attractive interactions. We demonstrate that attraction is essential for the system to exhibit nontrivial phases. We construct a detailed phase diagram by exploring the effects of the system's activity, density, and attraction strength. We identify several distinct phases, including a disordered, a gel, and a completely phase-separated phase. Additionally, we discover a novel dynamical phase, that we name percolating network, which is characterized by the presence of a spanning network of connected dumbbells. In the phase-separated phase we characterize numerically and describe analytically the helical motion of the dense cluster.

arXiv comment15 pages, 11 figures

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Cited by in corpus (5)

• Re-entrant percolation in active Brownian hard disks
• Fluctuation Theorems for Heat exchanges between passive and active baths
• Transverse Self-Propulsion Enhances the Aggregation of Active Dumbbells
• Phase separation in a chiral active fluid of inertial self-spinning disks
• Morphology, Polarization Patterns, Compression, and Entropy Production in Phase-Separating Active Dumbbell Systems