Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the ergodicity of perpendicular cosmic ray transport   Aims. The random walk of energetic charged particles in turbulent magnetic
fields is investigated. Special focus is placed on transport across the mean
magnetic field, which had been found to be subdiffusive on many occasions.
Therefore, a characterization using the concept of ergodicity is attempted by
noting the connection to the time evolution of the mean-square displacement.
Methods. Based on the test-particle approach, a numerical Monte-Carlo
simulation code is used to integrate the equation of motion for particles that
are scattered by magnetic turbulence. The turbulent fields are generated by
superposing plane waves with a Kolmogorov-type power spectrum. The individual
particle trajectories are then used to calculate a variety of statistical
quantities. Results. The simulation results clearly demonstrate how the
heterogeneity of the particle ensemble causes the system to be weakly
non-ergodic. In addition, it is shown how the step length distribution varies
with the particle energy. In conclusion, cross-field transport is non-Gaussian
but still almost diffusive.

15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess