Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Time Dependence in Plasma Codes   Time-dependent plasma codes are a natural extension of static nonequilibrium
plasma codes. Comparing relevant timescales will determine whether or not
time-dependent treatment is necessary. In this article I outline the
ingredients for a time-dependent plasma code in a homogeneous medium and
discuss the computational method. In the second half of the article I describe
recombination in the early Universe as a detailed example of a problem whose
solution requires a time-dependent plasma code.

28
The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph