Nonlinear Diffusion Through Large Complex Networks Containing Regular Subgraphs
arXiv:cond-mat/0606797 · doi:10.1007/s10955-007-9313-1
Abstract
Transport through generalized trees is considered. Trees contain the simple nodes and supernodes, either well-structured regular subgraphs or those with many triangles. We observe a superdiffusion for the highly connected nodes while it is Brownian for the rest of the nodes. Transport within a supernode is affected by the finite size effects vanishing as For the even dimensions of space, , the finite size effects break down the perturbation theory at small scales and can be regularized by using the heat-kernel expansion.
21 pages, 2 figures included