Ballistic Diffusion Induced by a Thermal Broadband Noise

We present a thermal broadband noise from the difference between two Ornstein-Uhlenbeck noises,which can induce a ballistic diffusion, i.e., long-time mean square displacement of a free particle drivenby this noise reads hx2ti / t2.We apply this noise to a flashing ratchet and the mean velocity of theparticle is calculated via Langevin simulation. The results s..