Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the dynamical reduction of the Vlasov equation   The elimination of a fast time scale from the Vlasov equation by
Lie-transform methods is an important step in deriving a reduced Vlasov
equation such as the drift-kinetic Vlasov equation or the gyrokinetic Vlasov
equation. It is shown here that this dynamical reduction also leads to the
introduction of polarization and magnetization effects in the reduced Maxwell
equations, which ensure that the reduced Vlasov-Maxwell equations possess an
exact energy-momentum conservation law.

11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat