Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anomalous magnetic moment of a bound electron   We study binding corrections to the gyromagnetic factor g_e of an electron in
hydrogen-like ions. We argue that the leading order binding effects in
radiative corrections Delta g_rad are universal to all orders in alpha/pi and
the complete result reads Delta g_rad = (g_free - 2) [1+(Z alpha)^2/6] +
O[alpha/pi (Zalpha)^4]. The theoretical uncertainty in the prediction for the
experimentally interesting carbon ion is decreased by a factor of about 3.

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The categories of this paper are: q-bio
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The categories of this paper are: chao-dyn
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The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
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The categories of this paper are: stat
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The categories of this paper are: chem-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-lat
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The categories of this paper are: econ
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con