Some properties of a class of coupled Langevin equations
Parthapratim Biswas, Arnab Majumdar, Anita Mehta, Jayanta K. Bhattacharjee · arXiv (Cornell University) · 1997
We present a set of coupled continuum equationswith a specific coupling between mobile grains $ρ$ and clusters $h$ on the surface of a sandpile. The equations are analysed self-consistently; we demonstrate that Edwards' infrared divergence is responsible for the unexpected critical exponents we find, which are verified by simulations.