Electrical networks on $n$-simplex fractals

Burioni, R.; Cassi, D.; Neri, F. M.

Electrical networks on $n$-simplex fractals

Authors

Burioni, R.

Cassi, D.

Neri, F. M.

Description

The decimation map $\mathcal{D}$ for a network of admittances on an $n$-simplex lattice fractal is studied. The asymptotic behaviour of $\mathcal{D}$ for large-size fractals is examined. It is found that in the vicinity of the isotropic point the eigenspaces of the linearized map are always three for $n \geq 4$; they are given a characterization in terms of graph theory. A new anisotropy exponent, related to the third eigenspace, is found, with a value crossing over from $\ln[(n+2)/3]/\ln 2$ to $\ln[(n+2)^3/n(n+1)^2]/\ln 2$.
14 pages, 8 figures