Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Time-Dependent Perpendicular Transport of Energetic Particles in
  Magnetic Turbulence with Transverse Complexity   The motion of energetic particles in magnetic turbulence across a mean
magnetic field is explored analytically. The approach presented here allows for
a full time-dependent description of the transport, including compound
sub-diffusion. The first time it is shown systematically that as soon as there
is transverse structure of the turbulence, diffusion is restored even if no
Coulomb collisions are invoked. Criteria for sub-diffusion and normal Markovian
diffusion are found as well.

8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
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The categories of this paper are: funct-an
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The categories of this paper are: bayes-an
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio