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arXiv · 2309.10937

Motility Induced Phase Separation and Frustration in Active Matter Swarmalators

B. Adorjani·A. Libal·C. Reichhardt·C. J. O. Reichhardt
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Abstract

We introduce a system of active matter swarmalators composed of elastically interacting run-and-tumble active disks with an internal phase $\phi_i$. The disks experience an additional attractive or repulsive force with neighboring disks depending upon their relative difference in $\phi_i$. In the absence of the internal phase, the system forms a Motility-Induced Phase Separated (MIPS) state, but when the swarmalator interactions are present, a wide variety of other active phases appear depending upon whether the interaction is attractive or repulsive and whether the particles act to synchronize or anti-synchronize their internal phase values. These include a gas-free gel regime, arrested clusters, a labyrinthine state, a regular MIPS state, a frustrated MIPS state for attractive anti-synchronization, and a superlattice MIPS state for attractive synchronization.

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B. Adorjani, A. Libal, C. Reichhardt, C. J. O. Reichhardt. 2023-09-19. Motility Induced Phase Separation and Frustration in Active Matter Swarmalators. https://doi.org/10.1103/physreve.109.024607

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