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In this work, the orientation adapter, a species of active particles thatadapt their direction of motion from the other active particles, is introduced.The orientation adapters exist besides the usual Vicsek-like particles; bothare self-driven, however, follow different interaction rules. We have studiedthe dynamics in high speed of the particles keeping dissimilar speeds for thesedifferent species. The effect of orientation adapters on the collectivebehaviour of the system is explored in this model. The orientationalorder-disorder phase transition is mainly studied in such systems. First, forequal density of both species, when the adapter speed $v_a=1.2v_0$ and usualparticles speed $v_0=1.0$, both adapters and the usual particles form densetravelling bands and move in the same direction. Near the transition point,such bands appear and disappear over time, giving rise to the co-existence oftwo phases. The adapters and the usual particles both undergo a discontinuoustransition. The nature of the transition is further confirmed by the existenceof hysteresis in the order parameter under a continuously varying noise field.However, when the adapter velocity becomes much higher than the usual SPPs $v_a\approx 7v_0$, the formation of travelling bands disappears from the system,and the transition becomes continuous. The density ratio is also varied,keeping the velocities constant, and the phase transition is studied. For ahigh adapter velocity with $v_a=10v_0$, the continuous transition is found withlow-density values of the adapters. The critical exponents related to thecontinuous transition are also determined.

Collective dynamics and phase transition of active matter in presence of orientation adapters