Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hydrodynamical model of QED cascade expansion in an extremely strong
  laser pulse   Development of the self-sustained quantum-electrodynamical (QED) cascade in a
single strong laser pulse is studied analytically and numerically. The
hydrodynamical approach is used to construct the analytical model of the
cascade evolution, which includes the key features of the cascade observed in
3D QED particle-in-cell (QED-PIC) simulations such as the magnetic field
predominance in the cascade plasma and laser energy absorption. The equations
of the model are derived in the closed form and are solved numerically. Direct
comparison between the solutions of the model equations and 3D QED-PIC
simulations shows that our model is able to describe the complex nonlinear
process of the cascade development qualitatively well. The various regimes of
the interaction based on the intensity of the laser pulse are revealed in both
the solutions of the model equations and the results of the QED-PIC
simulations.

19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ