Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Global existence and asymptotic decay of solutions to the Non-isentropic
  Euler-Maxwell system   The non-isentropic compressible Euler-Maxwell system is investigated in $R^3$
in the present paper, and the $L^q$ time decay rate for the global smooth
solution is established. It is shown that the density and temperature of
electron converge to the equilibrium states at the same rate $(1+t)^{-11/4}$ in
$L^q$ norm.

13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat