FIGURE 4.

Mean first passage time T(n₀) of target search on a large, one-sided system (one target located at x = 0), as a function of the density n₀ of excluding walkers that cannot occupy the same lattice site. The maximum density is n₀ = 30%. The dashed line corresponds to the exact result for dimensionless diffusion coefficient from Eq. 16 obtained in the continuum approximation. We see a slight deviation for larger densities. Each data point corresponds to 10⁵ runs, except for 10³ realizations for the lowest density. Note the comparatively small error bars.