Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electron-positron pair production in oscillating electric fields with
  double-pulse structure   Electron-positron pair production from vacuum in a strong electric field
oscillating in time is studied. The field is assumed to consist of two
consecutive pulses, with variable time delay in between. Pair production
probabilities are obtained by numerical solution of the corresponding
time-dependent Dirac equation. Considering symmetric field configurations
comprising two identical pulses, we show that the pulse distance strongly
affects the momentum spectra of produced particles and even the total
production probability. Conversely, in a highly asymmetric situation when the
field contains low-intensity prepulse and high-intensity main pulse, we
identify a range of field parameters where the prepulse despite its weakness
can leave visible traces in the particle spectra.

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The categories of this paper are: solv-int
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The categories of this paper are: econ
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph