Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-linear electrostatic waves in Born-Infeld plasmas   Motivated by the suggestion that Born-Infeld plasmas could have significance
for electron acceleration in neutron star crusts, we obtain an upper bound on
the amplitude of electrostatic waves propagating parallel to a longitudinal
magnetic field in a Born-Infeld plasma.

23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an