Physics – Condensed Matter – Statistical Mechanics
Scientific paper
1997-10-10
Physics
Condensed Matter
Statistical Mechanics
5 pages Latex, 3 figures (figures are poscript files)
Scientific paper
10.1088/0305-4470/31/22/006
We calculate the spectral dimension of a wide class of tree-like fractals by solving the random walk problem through a new analytical technique, based on invariance under generalized cutting-decimation transformations. These fractals are generalizations of the NTD lattices and they are characterized by non integer spectral dimension equal or greater then 2, non anomalous diffusion laws, dynamical dimension splitting and absence of phase transitions for spin models.
Burioni Raffaella
Cassi Davide
Pirati Alberto
Regina Sofia
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