Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Modeling of radiative and quantum electrodynamics effects in PIC
  simulations of ultra-relativistic laser-plasma interaction   Next generation of ultra-intense laser facilities will lead to novel physical
conditions ruled by collective and quantum electrodynamics effects, such as
synchrotron-like emission of high-energy photons and electron-positron pair
generation. In view of the future experiments performed in this regime, the
latter processes have been implemented into the particle-in-cell code CALDER.

27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex