E. Eisenberg et al., RANGE OF MULTIFRACTALITY FOR RANDOM-WALKS ON RANDOM FRACTALS, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 47(4), 1993, pp. 2333-2335
We study the range of multifractality for the probability density P(r,
t) of random walks on linear random fractals, for a given distance r a
nd time t. Analytical study of the moments [P(q)(r,t)] shows that mult
ifractality exists only when 1 < qr(d)w/t and qr/t < 1, with d(w) = 2d
(f), where d(f) is the fractal dimension of the linear fractal. The re
sults can be extended to more general random fractals and are consiste
nt with recent numerical data for the form of [P(r,t)].