Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Hitch-hiker's Guide to Stochastic Differential Equations: Solution
  Methods for Energetic Particle Transport in Space Physics and Astrophysics   In this review, an overview of the recent history of stochastic differential
equations (SDEs) in application to particle transport problems in space physics
and astrophysics is given. The aim is to present a helpful working guide to the
literature and at the same time introduce key principles of the SDE approach
via "toy models". Using these examples, we hope to provide an easy way for
newcomers to the field to use such methods in their own research. Aspects
covered are the solar modulation of cosmic rays, diffusive shock acceleration,
galactic cosmic ray propagation and solar energetic particle transport. We
believe that the SDE method, due to its simplicity and computational efficiency
on modern computer architectures, will be of significant relevance in energetic
particle studies in the years to come.

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The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
4
The categories of this paper are: cond-mat
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The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
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The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc