Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Is diffusion anomalous in two-dimensional Yukawa liquids?   There have recently been many predictions of "superdiffusion" in
two-dimensional strongly coupled Yukawa systems, both by computer simulations
and in dusty plasma experiments, with substantially varying diffusion
exponents. Here we show that the results crucially depend on the strength of
dissipation and the time instant of the measurement. For sufficiently large
friction even subdiffusion is possible. However, there are strong indications
that, in the long-time limit, anomalous diffusion vanishes for dissipative as
well as for frictionless systems.

11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con