Transport of interacting self-propelled Brownian particles in a common ratchet potential Qun Chen, Jian- chun Wu, Cai- tian Hu, Ya-li Ou and Bao-quan Ai Eur. Phys. J. B, 88 1 (2015) 22 Published online: 19 January 2015 DOI: 10.1140/epjb/e2014-50757-0