KINETICS OF A-]0 WITH DRIVEN DIFFUSIVE MOTION(B)

We study the kinetics of two-species annihilation A+B-->0 when all par ticles undergo strictly biased motion in the same direction and with a n excluded volume repulsion between same species particles. It was rec ently shown that the density in this system decays as t(-1/3), compare d to t(-1/4) density decay in A+B-->0 with isotropic diffusion and eit her with or without the hard-core repulsion. We suggest a relatively s imple explanation for this t(-1/3) decay based on the Burgers equation . Related properties associated with the asymptotic distribution of re actants can also be acounted for within this Burgers equation descript ion.