Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Charged Scalar Pair Production in Strong-Field Photon-Photon Interaction   Following the pioneering work of H. Reiss [1], we provide a covariant
calculation of the charged scalar particle pair production. The calculation is
facilitated by the use of two-dimensional Bessel functions and light-font
coordinates.

3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph