Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Coulomb corrections in the calculation of ultrarelativistic heavy ion
  production of continuum e+ e- pairs   Coulomb corrections to perturbation theory for producing electron-positron
pairs in ultrarelativistic heavy ion collisions are considered in a
part-analytical, part-numerical approach. Production probabilities are reduced
from perturbation theory with increasing charge of the colliding heavy ions, as
has been previously argued in the literature. It is shown here that the
reduction from perturbation theory comes from the appropriate physical spatial
cutoff of the electromagnetic potentials arising from the colliding
ultrarelativistic heavy ions.

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The categories of this paper are: comp-gas
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The categories of this paper are: mtrl-th
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The categories of this paper are: econ
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The categories of this paper are: bayes-an
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The categories of this paper are: patt-sol
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The categories of this paper are: atom-ph
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
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The categories of this paper are: dg-ga
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The categories of this paper are: supr-con
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The categories of this paper are: stat
6
The categories of this paper are: astro-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc