Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A simple way to take into account back reaction on pair creation   We propose a simple and systematic way of accounting for the back reaction on
the background field due to the pair creation in the four--dimensional scalar
QED. This method is straightforwardly generalizable to the gravity backgrounds.
In the case of QED with the instantly switched on constant electric field
background we obtain a remarkably simple formula for its decay rate.

19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin