We demonstrate that there is a macroscopic coexistence between regions with hexatic order and regions in the liquid or gas phase over a finite interval of packing fractions in active dumbbell systems with repulsive power-law interactions in two dimensions. In the passive limit, this interval remains finite, similar to what has been found in two-dimensional systems of hard and soft disks. We did not find discontinuous behavior upon increasing activity from the passive limit.

Phase Coexistence in Two-Dimensional Passive and Active Dumbbell Systems

DIGREGORIO, PASQUALE;Gonnella, Giuseppe
;
Suma, Antonio
2017-01-01

Abstract

We demonstrate that there is a macroscopic coexistence between regions with hexatic order and regions in the liquid or gas phase over a finite interval of packing fractions in active dumbbell systems with repulsive power-law interactions in two dimensions. In the passive limit, this interval remains finite, similar to what has been found in two-dimensional systems of hard and soft disks. We did not find discontinuous behavior upon increasing activity from the passive limit.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11586/213194
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