Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamical Schwinger effect: Properties of the $e^{+}e^{-}$ plasma
  created from vacuum in strong laser fields   We study the dynamical Schwinger effect in the vacuum excitation of the
electron-positron plasma under action of a "laser pulse" of the simplest
configuration: a linearly polarized, time-dependent and spatially homogeneous
electric field. Methodical basis of this investigation is the kinetic equation
which is an exact consequence of the basic equations of motion of QED in the
considered field model. In the present work we investigate some features of the
residual electron-positron plasma and the transient process of its formation.

13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th