Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A comment on generalized Schwinger effect   A spatially homogeneous, time-dependent, electric field can produce charged
particle pairs from the vacuum. When the electric field is constant, the mean
number of pairs which are produced depends on the electric field and the
coupling constant in a non-analytic manner, showing that this result cannot be
obtained from the standard perturbation theory of quantum electrodynamics. When
the electric field varies with time and vanishes asymptotically, the result may
depend on the coupling constant either analytically or non-analytically. We
investigate the nature of this dependence in detail. We show that the
dependence of particle production on coupling constant is non-analytic for a
class of time-dependent electric fields which vanish asymptotically when a
specific condition is satisfied. We also demonstrate that for another class of
electric fields, which vary rapidly, the dependence of particle production on
coupling constant is analytic.

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The categories of this paper are: hep-ex
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The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
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The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
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The categories of this paper are: cs
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg