Abstract
We propose a novel segregation mechanism where the species-dependent interactions are dynamically induced by the phase synchronization of beads. Based on this scenario, we report a new segregation among beads of different restitution coefficients by the molecular dynamics simulations. Since the beads are of equal size and mass, this is not related to the Brazilian-nut effect, nor can it be explained by the depletion force, or other related segregation mechanisms proposed so far. Instead, this phenomenon derives from the phase synchronization, which concept helps us determine the criteria for segregation and the phase boundaries that agree excellently with the simulation results.