Oriented bond-site percolation in random environment and contact processes with periodic recovery

Abstract

We investigate oriented bond-site percolation on the planar lattice in which entire columns are stretched. Generalising recent results by Hilário et al., we establish non-trivial percolation under a $(1+\epsilon )$-th moment condition on the stretches and use this to prove survival of contact processes with periodic recoveries as well as in random environments.