We study the survival probability of an immobile target in the presence of N independent diffusing walkers. We address the problem of the Mean Target Lifetime and its dependence on the number and initial distribution of the walkers when the trapping is perfect or imperfect. We consider the...

A bichromatic majority model is presented and studied analytically. The mean value of one color, say black, dominant cluster size is calculated as a function of the occupancy probability p for the black plaquettes, while 1−p=q is the occupancy probability for the white plaquettes. The model...

A diffusion model based on a continuous time random walk scheme with a separable transition probability density is introduced. The probability density for long jumps is proportional to x−1−γ (a Lévy-like probability density). Even when the probability density for the walker position at...