Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The effect of interference on the trident process in a constant crossed
  field   We perform a complete calculation of electron-seeded pair-creation (the
trident process) in a constant crossed electromagnetic background. Unlike
earlier treatments, we include the interference between exchange diagrams. We
find this exchange interference can be written as a contribution solely to the
one-step process, and for small quantum nonlinearity parameter is of the same
order as other one-step terms. We find the exchange interference further
suppresses the one-step process in this parameter regime. Our findings further
support the crucial assumption made in laser-plasma simulation codes that at
high intensities, the trident process can be well-approximated by repeated
iteration of the single-vertex subprocesses. The applicability of this
assumption to higher-vertex processes has fundamental importance to the
development of simulation capabilities.

1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
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The categories of this paper are: eess
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph