Active dumbbells: Dynamics and morphology in the coexisting region

I Petrelli and P Digregorio and LF Cugliandolo and G Gonnella and A Suma, EUROPEAN PHYSICAL JOURNAL E, 41, 128 (2018).

DOI: 10.1140/epje/i2018-11739-y

.With the help of molecular dynamics simulations we study an ensemble of active dumbbells in purely repulsive interaction. We derive the phase diagram in the density-activity plane and we characterise the various phases with liquid, hexatic and solid character. The analysis of the structural and dynamical properties, such as enstrophy, mean-square displacement, polarisation, and correlation functions, shows the continuous character of liquid and hexatic phases in the coexisting region when the activity is increased starting from the passive limit.

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