10 research outputs found
Random walks in random environments without ellipticity
We consider random walks in random environments on Z^d. Under a transitivity
hypothesis that is much weaker than the customary ellipticity condition, and
assuming an absolutely continuous invariant measure on the space of the
environments, we prove the ergodicity of the annealed process w.r.t. the
dynamics "from the point of view of the particle". This implies in particular
that the environment viewed from the particle is ergodic. As an example of
application of this result, we give a general form of the quenched Invariance
Principle for walks in doubly stochastic environments with zero local drift
(martingale condition).Comment: Final version for Stochastic Process. Appl., 18 pages, 1 figur
Improving success of orotracheal intubation by novice operators in microgravity with video-laryngoscopy
International audienc