Directional transport of coupled self-propelled particles with potential and Gaussian colored noise

Abstract

The transport phenomenon of coupled self-propelled particles with potential and colored noise is investigated. Large translational motion noise intensity is good for the directional transport in [Formula: see text]-direction, but large self-correlation time of translational motion noise will inhibit this transport. For proper value of the asymmetry parameter, coupled inert particles move always in the [Formula: see text]-direction with increasing angular noise intensity, but in coupled self-propelled particles appears current reversal phenomenon with increasing angular noise intensity. The average velocity has a maximum and a minimum with increasing spring constant k. For inert particles and particles with small self-propelled speed, large number of particles is good for directional movement, but the effect of coupling will become weak when the self-propelled speed is large.