Two-Time Diffusion Process in the Porous Medium
Tao Tu, Hao Xiao-Jie, Guo‐Ping Guo, Guo Guang-Can · Chinese Physics Letters · 2007
We find that there are two time scales t and ε ln t in the asymptotic behaviour of diffusion process in the porous medium, which give us a new insight to the anomalous dimension in this problem. Further we construct an iterative method to calculate the anomalous dimension and obtain an improved result.