Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Diffusion in disordered media as a process with memory   The problem of a random walk in a disordered media is mapped into a model of
a random walk with memory. The latter model, as opposed to the former one, does
not make reference to a particular realization of the disorder. The equivalence
of the two models implies that the new model retrieves dynamically a
realization of disorder; the only one which is consistent with its dynamics. In
this new approach to the dynamics in disordered media, effects of memory, aging
and the peculiar localization properties of the random walker, appear quite
natural.

9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys