Comment on "White-Noise-Induced Transport in Periodic Structures"
arXiv:adap-org/9512002 · doi:10.1209/epl/i1996-00572-5
Abstract
In the paper by J.Łuczka {\em et al.} ({\em Europhys. Lett.}, {\bf 31} (1995) 431), the authors reported by rigorous calculation that an additive Poissonian white shot noise can induce a macroscopic current of a dissipative particle in a periodic potential -- even {\em in the absence} of spatial asymmetry of the potential. We argue that their main result is an obvious one caused by the spatially broken symmetry of a probability distribution of the additive noise, unlike the similar result caused by chaotic noise which has a symmetric probability distribution ({\em J.Phys.Soc.Jpn.}, {\bf 63} (1994) 2014).
2 pages (Latex); submitted to Europhys.Lett