Figure 3.

MSD, $\langle \Delta r^2\left(t\right)\rangle$, for various values of $N_s$ and corresponding $\xi /{\sigma }_{tr}$ at $\varphi =0.2$, where ${\sigma }_{tr}$ is the diameter of a tracer particle. The line of ∼$t^1$ (the black dashed line) is the guide to the eyes denoting the diffusive, linear regime at long times ($t>{\tau }_D$), where ${\tau }_D$ is the crossover time distinguishing subdiffusion and normal diffusion and marked by black open diamonds. The MSD of a tracer particle in free solutions without polymer network is also presented for comparison (black plus symbols marked as $\varphi =0$).