Exact velocity of dispersive flow in the asymmetric avalanche process
  Using the Bethe ansatz we obtain the exact solution for the one-dimensional asymmetric avalanche process. We evaluate the velocity of dispersive flow as a function of driving force and the density of particles. The obtained solution shows a dynamical transition from intermittent to continuous flow. 
E. V. Ivashkevich, A. M. Povolotsky, V. B. Priezzhev