Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Precise Numerical Evaluation of the Scalar One-Loop Integrals with the
  Infrared Divergence   We present a new approach for obtaining very precise integration results for
infrared vertex and box diagrams, where the integration is carried out directly
without performing any analytic integration of Feynman parameters. Using an
appropriate numerical integration routine with an extrapolation method,
together with a multi-precision library, we have obtained integration results
which agree with the analytic results to 10 digits even for such a very small
photon mass as $10^{-150}$ GeV in the infrared vertex diagram.

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The categories of this paper are: hep-th
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The categories of this paper are: gr-qc
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The categories of this paper are: supr-con
19
The categories of this paper are: eess
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The categories of this paper are: comp-gas
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
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The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
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The categories of this paper are: math
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The categories of this paper are: chem-ph
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The categories of this paper are: math-ph