Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum statistics effect in Schwinger pair production in short laser
  pulses   We investigate non-perturbative pair production from vacuum (the Schwinger
effect) in the focal region of two counter-propagating, ultra-short laser
pulses with sub-cycle structure. We use the quantum kinetic formulation to
calculate the momentum spectrum of created particles and show the extreme
sensitivity to the laser frequency $\omega$, the pulse length $\tau$ and the
carrier-envelope absolute phase $\phi$. We apply this formalism to both
fermions and bosons to illustrate the influence of quantum statistics in this
type of electric background field.

6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org