Effects of Two Distinct Types of Noise on the Directional Alignment of a Self-Propelled Particles System

Abstract

An important tool for describing the collective motion of autonomous particles is based on the concept of self-propelled particles, where each particle interacts locally with its neighbors, subject to the interference of some noise. There are two ways to introduce noise into the system: either during (extrinsic noise) or after (intrinsic noise) the interactions have occurred. In this work, we present a study of the effects of these two types of noise on the directional order of self-propelled particles. Our numerical investigations show that the directional alignment degree is strongly influenced by the way in which one introduces the noise.