Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electromagnetic Corrections to the One-Pion-Exchange Potential   Leading-order electromagnetic loop corrections to the one-pion-exchange
potential are computed within the framework of chiral perturbation theory.
These corrections generate an effective nucleon-nucleon potential, $V_{\pi
\gamma}$, which supplements the sum of OPEP and the nucleon-nucleon Coulomb
potential. This potential is charge dependent and its construction is
demonstrated to be gauge invariant. The potential $V_{\pi \gamma}$ has been
included in the Nijmegen partial-wave analysis of np data. A particular
renormalization scheme is chosen that leads to a negligible change in the
charged-piNN coupling constant and in the np 1S0 scattering length and
effective range.

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The categories of this paper are: q-bio
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-th
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-lat
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The categories of this paper are: gr-qc
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The categories of this paper are: atom-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: stat
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The categories of this paper are: acc-phys
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The categories of this paper are: nucl-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: nlin